diff --git a/OpenUtau/Controls/NotePropertiesControl.axaml b/OpenUtau/Controls/NotePropertiesControl.axaml
index d2f3dba01..14d0aff2b 100644
--- a/OpenUtau/Controls/NotePropertiesControl.axaml
+++ b/OpenUtau/Controls/NotePropertiesControl.axaml
@@ -51,14 +51,14 @@
             </Grid>
             <Grid ColumnDefinitions="130,20,50,20,*">
               <Label Content="{DynamicResource notedefaults.portamento.length}"/>
-              <TextBox Grid.Column="2" Text="{Binding PortamentoLength}" Tag="PortamentoLength"/>
+              <TextBox Grid.Column="2" Text="{Binding PortamentoLength, Mode=OneWay}" Tag="PortamentoLength"/>
               <Slider Grid.Column="4" Classes="fader" Value="{Binding PortamentoLength}" Minimum="2" Maximum="320"
                       TickPlacement="BottomRight" TickFrequency="1" IsSnapToTickEnabled="true"
                       Tag="PortamentoLength"/>
             </Grid>
             <Grid ColumnDefinitions="130,20,50,20,*">
               <Label Content="{DynamicResource notedefaults.portamento.start}"/>
-              <TextBox Grid.Column="2" Text="{Binding PortamentoStart}" Tag="PortamentoStart" Margin="0"/>
+              <TextBox Grid.Column="2" Text="{Binding PortamentoStart, Mode=OneWay}" Tag="PortamentoStart" Margin="0"/>
               <Slider Grid.Column="4" Classes="fader" Value="{Binding PortamentoStart}" Minimum="-200" Maximum="200"
                       TickPlacement="BottomRight" TickFrequency="1" IsSnapToTickEnabled="true"
                       Tag="PortamentoStart"/>
@@ -86,56 +86,56 @@
             <Grid ColumnDefinitions="130,20,50,20,*" >
               <Label Content="{DynamicResource notedefaults.vibrato.length}"/>
               <TextBox Grid.Column="2" Text="{Binding VibratoLength, Mode=OneWay}" Tag="VibratoLength"/>
-              <Slider Grid.Column="4" Classes="fader" Value="{Binding VibratoLength, Mode=OneWay}" Minimum="0" Maximum="100"
+              <Slider Grid.Column="4" Classes="fader" Value="{Binding VibratoLength}" Minimum="0" Maximum="100"
                       TickPlacement="BottomRight" TickFrequency="0.1" IsSnapToTickEnabled="true"
                       Tag="VibratoLength" IsDirectionReversed="True" />
             </Grid>
             <Grid ColumnDefinitions="130,20,50,20,*">
               <Label Content="{DynamicResource notedefaults.vibrato.period}"/>
               <TextBox Grid.Column="2" Text="{Binding VibratoPeriod, Mode=OneWay}" Tag="VibratoPeriod"/>
-              <Slider Grid.Column="4" Classes="fader" Value="{Binding VibratoPeriod, Mode=OneWay}" Minimum="5" Maximum="500"
+              <Slider Grid.Column="4" Classes="fader" Value="{Binding VibratoPeriod}" Minimum="5" Maximum="500"
                       TickPlacement="BottomRight" TickFrequency="0.1" IsSnapToTickEnabled="true"
                       Tag="VibratoPeriod"/>
             </Grid>
             <Grid ColumnDefinitions="130,20,50,20,*">
               <Label Content="{DynamicResource notedefaults.vibrato.depth}"/>
               <TextBox Grid.Column="2" Text="{Binding VibratoDepth, Mode=OneWay}" Tag="VibratoDepth"/>
-              <Slider Grid.Column="4" Classes="fader" Value="{Binding VibratoDepth, Mode=OneWay}" Minimum="5" Maximum="200"
+              <Slider Grid.Column="4" Classes="fader" Value="{Binding VibratoDepth}" Minimum="5" Maximum="200"
                       TickPlacement="BottomRight" TickFrequency="0.1" IsSnapToTickEnabled="true"
                       Tag="VibratoDepth"/>
             </Grid>
             <Grid ColumnDefinitions="130,20,50,20,*">
               <Label Content="{DynamicResource notedefaults.vibrato.in}"/>
               <TextBox Grid.Column="2" Text="{Binding VibratoIn, Mode=OneWay}" Tag="VibratoIn"/>
-              <Slider Grid.Column="4" Classes="fader" Value="{Binding VibratoIn, Mode=OneWay}" Minimum="0" Maximum="100"
+              <Slider Grid.Column="4" Classes="fader" Value="{Binding VibratoIn}" Minimum="0" Maximum="100"
                       TickPlacement="BottomRight" TickFrequency="0.1" IsSnapToTickEnabled="true"
                       Tag="VibratoIn"/>
             </Grid>
             <Grid ColumnDefinitions="130,20,50,20,*">
               <Label Content="{DynamicResource notedefaults.vibrato.out}"/>
               <TextBox Grid.Column="2" Text="{Binding VibratoOut, Mode=OneWay}" Tag="VibratoOut"/>
-              <Slider Grid.Column="4" Classes="fader" Value="{Binding VibratoOut, Mode=OneWay}" Minimum="0" Maximum="100"
+              <Slider Grid.Column="4" Classes="fader" Value="{Binding VibratoOut}" Minimum="0" Maximum="100"
                       TickPlacement="BottomRight" TickFrequency="0.1" IsSnapToTickEnabled="true"
                       Tag="VibratoOut"/>
             </Grid>
             <Grid ColumnDefinitions="130,20,50,20,*">
               <Label Content="{DynamicResource notedefaults.vibrato.shift}"/>
               <TextBox Grid.Column="2" Text="{Binding VibratoShift, Mode=OneWay}" Tag="VibratoShift"/>
-              <Slider Grid.Column="4" Classes="fader" Value="{Binding VibratoShift, Mode=OneWay}" Minimum="0" Maximum="100"
+              <Slider Grid.Column="4" Classes="fader" Value="{Binding VibratoShift}" Minimum="0" Maximum="100"
                       TickPlacement="BottomRight" TickFrequency="0.1" IsSnapToTickEnabled="true"
                       Tag="VibratoShift"/>
             </Grid>
             <Grid ColumnDefinitions="130,20,50,20,*">
               <Label Content="{DynamicResource notedefaults.vibrato.drift}"/>
               <TextBox Grid.Column="2" Text="{Binding VibratoDrift, Mode=OneWay}" Tag="VibratoDrift"/>
-              <Slider Grid.Column="4" Classes="fader" Value="{Binding VibratoDrift, Mode=OneWay}" Minimum="-100" Maximum="100"
+              <Slider Grid.Column="4" Classes="fader" Value="{Binding VibratoDrift}" Minimum="-100" Maximum="100"
                       TickPlacement="BottomRight" TickFrequency="0.1" IsSnapToTickEnabled="true"
                       Tag="VibratoDrift"/>
             </Grid>
             <Grid ColumnDefinitions="130,20,50,20,*">
               <Label Content="{DynamicResource notedefaults.vibrato.vollink}"/>
               <TextBox Grid.Column="2" Text="{Binding VibratoVolLink, Mode=OneWay}" Tag="VibratoVolLink"/>
-              <Slider Grid.Column="4" Classes="fader" Value="{Binding VibratoVolLink, Mode=OneWay}" Minimum="-100" Maximum="100"
+              <Slider Grid.Column="4" Classes="fader" Value="{Binding VibratoVolLink}" Minimum="-100" Maximum="100"
                       TickPlacement="BottomRight" TickFrequency="0.1" IsSnapToTickEnabled="true"
                       Tag="VibratoVolLink"/>
             </Grid>
diff --git a/OpenUtau/Controls/NotePropertiesControl.axaml.cs b/OpenUtau/Controls/NotePropertiesControl.axaml.cs
index 2a323a4ce..e9d7789e0 100644
--- a/OpenUtau/Controls/NotePropertiesControl.axaml.cs
+++ b/OpenUtau/Controls/NotePropertiesControl.axaml.cs
@@ -1,4 +1,4 @@
-using System;
+using System;
 using System.Linq;
 using Avalonia.Controls;
 using Avalonia.Input;
@@ -96,13 +96,16 @@ void SliderPointerPressed(object? sender, PointerPressedEventArgs args) {
         void SliderPointerReleased(object? sender, PointerReleasedEventArgs args) {
             Log.Debug("Slider released");
             if (NotePropertiesViewModel.PanelControlPressed) {
+                if (sender is Slider slider && slider.Tag is string tag && !string.IsNullOrEmpty(tag)) {
+                    ViewModel.SetNoteParams(tag, (float)slider.Value);
+                }
                 NotePropertiesViewModel.PanelControlPressed = false;
                 DocManager.Inst.EndUndoGroup();
             }
         }
         void SliderPointerMoved(object? sender, PointerEventArgs args) {
             if (sender is Slider slider && slider.Tag is string tag && !string.IsNullOrEmpty(tag)) {
-                ViewModel.SetNoteParams(tag, slider.Value);
+                ViewModel.SetNoteParams(tag, (float)slider.Value);
             }
         }
 
diff --git a/OpenUtau/Controls/NotePropertyExpression.axaml b/OpenUtau/Controls/NotePropertyExpression.axaml
index 122c4a65a..2b73f17c0 100644
--- a/OpenUtau/Controls/NotePropertyExpression.axaml
+++ b/OpenUtau/Controls/NotePropertyExpression.axaml
@@ -8,7 +8,7 @@
     <Label Content="{Binding Name}" Grid.Column="0" VerticalAlignment="Center"/>
     <TextBox Text="{Binding Value, Mode=OneWay}" Grid.Column="2" IsVisible="{Binding IsNumerical}" VerticalAlignment="Center" IsEnabled="{Binding IsNoteSelected}"
              GotFocus="OnTextBoxGotFocus" LostFocus="OnTextBoxLostFocus"/>
-    <Slider Grid.Column="4" Classes="fader" Value="{Binding Value, Mode=OneWay}" Minimum="{Binding Min}" Maximum="{Binding Max}"
+    <Slider Grid.Column="4" Classes="fader" Value="{Binding Value}" Minimum="{Binding Min}" Maximum="{Binding Max}"
             TickPlacement="BottomRight" TickFrequency="1" IsSnapToTickEnabled="true" IsVisible="{Binding IsNumerical}" VerticalAlignment="Center" IsEnabled="{Binding IsNoteSelected}"
             Name="slider"/>
     <ComboBox Grid.Column="1" Grid.ColumnSpan="4" ItemsSource="{Binding Options}"
diff --git a/OpenUtau/Controls/NotePropertyExpression.axaml.cs b/OpenUtau/Controls/NotePropertyExpression.axaml.cs
index c95c2e071..35af94f6a 100644
--- a/OpenUtau/Controls/NotePropertyExpression.axaml.cs
+++ b/OpenUtau/Controls/NotePropertyExpression.axaml.cs
@@ -57,13 +57,16 @@ void SliderPointerPressed(object? sender, PointerPressedEventArgs args) {
         void SliderPointerReleased(object? sender, PointerReleasedEventArgs args) {
             Log.Debug("Slider released");
             if (NotePropertiesViewModel.PanelControlPressed) {
+                if (sender is Slider slider && DataContext is NotePropertyExpViewModel ViewModel) {
+                    ViewModel.SetNumericalExpressions((float)slider.Value);
+                }
                 NotePropertiesViewModel.PanelControlPressed = false;
                 DocManager.Inst.EndUndoGroup();
             }
         }
         void SliderPointerMoved(object? sender, PointerEventArgs args) {
             if (sender is Slider slider && DataContext is NotePropertyExpViewModel ViewModel) {
-                ViewModel.SetNumericalExpressions(slider.Value);
+                ViewModel.SetNumericalExpressions((float)slider.Value);
             }
         }
     }
diff --git a/OpenUtau/ViewModels/NotePropertiesViewModel.cs b/OpenUtau/ViewModels/NotePropertiesViewModel.cs
index 093f21809..29dc9fbd9 100644
--- a/OpenUtau/ViewModels/NotePropertiesViewModel.cs
+++ b/OpenUtau/ViewModels/NotePropertiesViewModel.cs
@@ -336,98 +336,144 @@ public void SetNoteParams(string tag, object? obj) {
                     pitch.AddPoint(new PitchPoint(PortamentoStart + PortamentoLength, 0));
                     DocManager.Inst.ExecuteCmd(new SetPitchPointsCommand(Part, selectedNotes, pitch));
                 } else if (tag == "VibratoLength") {
-                    float value;
-                    if (obj != null && (obj is float f || float.TryParse(obj.ToString(), out f)) && f >= 0 && f <= 100) {
-                        value = f;
-                    } else {
-                        value = NotePresets.Default.DefaultVibrato.VibratoLength;
-                    }
+                    float value = ParseValue(obj, 0, 100, NotePresets.Default.DefaultVibrato.VibratoLength, out bool calculate);
                     UNote first = selectedNotes.First();
-                    foreach (UNote note in selectedNotes) {
-                        if (note != first && AutoVibratoToggle && note.duration < AutoVibratoNoteLength) {
-                            if (note.vibrato.length != 0) {
-                                DocManager.Inst.ExecuteCmd(new VibratoLengthCommand(Part, note, 0));
+                    if (calculate) {
+                        foreach (UNote note in selectedNotes) {
+                            float calValue = note.vibrato.length + value;
+                            calValue = Math.Min(100, Math.Max(0, calValue));
+                            DocManager.Inst.ExecuteCmd(new VibratoLengthCommand(Part, note, calValue));
+                        }
+                    } else {
+                        foreach (UNote note in selectedNotes) {
+                            if (note != first && AutoVibratoToggle && note.duration < AutoVibratoNoteLength) {
+                                if (note.vibrato.length != 0) {
+                                    DocManager.Inst.ExecuteCmd(new VibratoLengthCommand(Part, note, 0));
+                                }
+                            } else {
+                                DocManager.Inst.ExecuteCmd(new VibratoLengthCommand(Part, note, value));
                             }
-                        } else {
-                            DocManager.Inst.ExecuteCmd(new VibratoLengthCommand(Part, note, value));
                         }
                     }
+
                     if (first.vibrato.length > 0) {
                         VibratoEnable = true;
                     } else {
                         VibratoEnable = false;
                     }
                 } else if (tag == "VibratoPeriod") {
-                    float value;
-                    if (obj != null && (obj is float f || float.TryParse(obj.ToString(), out f)) && f >= 5 && f <= 500) {
-                        value = f;
+                    float value = ParseValue(obj, 5, 500, NotePresets.Default.DefaultVibrato.VibratoPeriod, out bool calculate);
+                    if (calculate) {
+                        foreach (UNote note in selectedNotes) {
+                            float calValue = note.vibrato.period + value;
+                            calValue = Math.Min(500, Math.Max(5, calValue));
+                            DocManager.Inst.ExecuteCmd(new VibratoPeriodCommand(Part, note, calValue));
+                        }
                     } else {
-                        value = NotePresets.Default.DefaultVibrato.VibratoPeriod;
-                    }
-                    foreach (UNote note in selectedNotes) {
-                        DocManager.Inst.ExecuteCmd(new VibratoPeriodCommand(Part, note, value));
+                        foreach (UNote note in selectedNotes) {
+                            DocManager.Inst.ExecuteCmd(new VibratoPeriodCommand(Part, note, value));
+                        }
                     }
                 } else if (tag == "VibratoDepth") {
-                    float value;
-                    if (obj != null && (obj is float f || float.TryParse(obj.ToString(), out f)) && f >= 5 && f <= 200) {
-                        value = f;
+                    float value = ParseValue(obj, 5, 200, NotePresets.Default.DefaultVibrato.VibratoDepth, out bool calculate);
+                    if (calculate) {
+                        foreach (UNote note in selectedNotes) {
+                            float calValue = note.vibrato.depth + value;
+                            calValue = Math.Min(200, Math.Max(5, calValue));
+                            DocManager.Inst.ExecuteCmd(new VibratoDepthCommand(Part, note, calValue));
+                        }
                     } else {
-                        value = NotePresets.Default.DefaultVibrato.VibratoDepth;
-                    }
-                    foreach (UNote note in selectedNotes) {
-                        DocManager.Inst.ExecuteCmd(new VibratoDepthCommand(Part, note, value));
+                        foreach (UNote note in selectedNotes) {
+                            DocManager.Inst.ExecuteCmd(new VibratoDepthCommand(Part, note, value));
+                        }
                     }
                 } else if (tag == "VibratoIn") {
-                    float value;
-                    if (obj != null && (obj is float f || float.TryParse(obj.ToString(), out f)) && f >= 0 && f <= 100) {
-                        value = f;
+                    float value = ParseValue(obj, 0, 100, NotePresets.Default.DefaultVibrato.VibratoIn, out bool calculate);
+                    if (calculate) {
+                        foreach (UNote note in selectedNotes) {
+                            float calValue = note.vibrato.@in + value;
+                            calValue = Math.Min(100, Math.Max(0, calValue));
+                            DocManager.Inst.ExecuteCmd(new VibratoFadeInCommand(Part, note, calValue));
+                        }
                     } else {
-                        value = NotePresets.Default.DefaultVibrato.VibratoIn;
-                    }
-                    foreach (UNote note in selectedNotes) {
-                        DocManager.Inst.ExecuteCmd(new VibratoFadeInCommand(Part, note, value));
+                        foreach (UNote note in selectedNotes) {
+                            DocManager.Inst.ExecuteCmd(new VibratoFadeInCommand(Part, note, value));
+                        }
                     }
                 } else if (tag == "VibratoOut") {
-                    float value;
-                    if (obj != null && (obj is float f || float.TryParse(obj.ToString(), out f)) && f >= 0 && f <= 100) {
-                        value = f;
+                    float value = ParseValue(obj, 0, 100, NotePresets.Default.DefaultVibrato.VibratoOut, out bool calculate);
+                    if (calculate) {
+                        foreach (UNote note in selectedNotes) {
+                            float calValue = note.vibrato.@out + value;
+                            calValue = Math.Min(100, Math.Max(0, calValue));
+                            DocManager.Inst.ExecuteCmd(new VibratoFadeOutCommand(Part, note, calValue));
+                        }
                     } else {
-                        value = NotePresets.Default.DefaultVibrato.VibratoOut;
-                    }
-                    foreach (UNote note in selectedNotes) {
-                        DocManager.Inst.ExecuteCmd(new VibratoFadeOutCommand(Part, note, value));
+                        foreach (UNote note in selectedNotes) {
+                            DocManager.Inst.ExecuteCmd(new VibratoFadeOutCommand(Part, note, value));
+                        }
                     }
                 } else if (tag == "VibratoShift") {
-                    float value;
-                    if (obj != null && (obj is float f || float.TryParse(obj.ToString(), out f)) && f >= 0 && f <= 100) {
-                        value = f;
+                    float value = ParseValue(obj, 0, 100, NotePresets.Default.DefaultVibrato.VibratoShift, out bool calculate);
+                    if (calculate) {
+                        foreach (UNote note in selectedNotes) {
+                            float calValue = note.vibrato.shift + value;
+                            calValue = Math.Min(100, Math.Max(0, calValue));
+                            DocManager.Inst.ExecuteCmd(new VibratoShiftCommand(Part, note, calValue));
+                        }
                     } else {
-                        value = NotePresets.Default.DefaultVibrato.VibratoShift;
-                    }
-                    foreach (UNote note in selectedNotes) {
-                        DocManager.Inst.ExecuteCmd(new VibratoShiftCommand(Part, note, value));
+                        foreach (UNote note in selectedNotes) {
+                            DocManager.Inst.ExecuteCmd(new VibratoShiftCommand(Part, note, value));
+                        }
                     }
                 } else if (tag == "VibratoDrift") {
-                    float value;
-                    if (obj != null && (obj is float f || float.TryParse(obj.ToString(), out f)) && f >= -100 && f <= 100) {
-                        value = f;
+                    float value = ParseValue(obj, -100, 100, NotePresets.Default.DefaultVibrato.VibratoDrift, out bool calculate);
+                    if (calculate) {
+                        foreach (UNote note in selectedNotes) {
+                            float calValue = note.vibrato.drift + value;
+                            calValue = Math.Min(100, Math.Max(-100, calValue));
+                            DocManager.Inst.ExecuteCmd(new VibratoDriftCommand(Part, note, calValue));
+                        }
                     } else {
-                        value = NotePresets.Default.DefaultVibrato.VibratoDrift;
-                    }
-                    foreach (UNote note in selectedNotes) {
-                        DocManager.Inst.ExecuteCmd(new VibratoDriftCommand(Part, note, value));
+                        foreach (UNote note in selectedNotes) {
+                            DocManager.Inst.ExecuteCmd(new VibratoDriftCommand(Part, note, value));
+                        }
                     }
                 } else if (tag == "VibratoVolLink") {
-                    float value;
-                    if (obj != null && (obj is float f || float.TryParse(obj.ToString(), out f)) && f >= -100 && f <= 100) {
-                        value = f;
+                    float value = ParseValue(obj, -100, 100, NotePresets.Default.DefaultVibrato.VibratoVolLink, out bool calculate);
+                    if (calculate) {
+                        foreach (UNote note in selectedNotes) {
+                            float calValue = note.vibrato.volLink + value;
+                            calValue = Math.Min(100, Math.Max(-100, calValue));
+                            DocManager.Inst.ExecuteCmd(new VibratoVolumeLinkCommand(Part, note, calValue));
+                        }
                     } else {
-                        value = NotePresets.Default.DefaultVibrato.VibratoVolLink;
+                        foreach (UNote note in selectedNotes) {
+                            DocManager.Inst.ExecuteCmd(new VibratoVolumeLinkCommand(Part, note, value));
+                        }
                     }
-                    foreach (UNote note in selectedNotes) {
-                        DocManager.Inst.ExecuteCmd(new VibratoVolumeLinkCommand(Part, note, value));
+                }
+            }
+        }
+        private float ParseValue(object? obj, float min, float max, float def, out bool calculate) {
+            calculate = false;
+            if (obj != null) {
+                if (obj is string s && !string.IsNullOrEmpty(s)) {
+                    if ((s.StartsWith("+") || s.StartsWith("-")) && float.TryParse(s, out float f)) {
+                        calculate = true;
+                        return f;
+                    } else if (float.TryParse(s, out f) && f >= min && f <= max) {
+                        return f;
+                    } else {
+                        return def;
                     }
+                } else if (obj is float f && f >= min && f <= max) {
+                    return f;
+                } else {
+                    return def;
                 }
+            } else {
+                return def;
             }
         }
         public void SetVibratoEnable() {
@@ -456,14 +502,31 @@ public void SetVibratoEnable() {
                 DocManager.Inst.EndUndoGroup();
             }
         }
-        public void SetNumericalExpressionsChanges(string abbr, float value) {
+        public void SetNumericalExpressionsChanges(string abbr, object? obj) {
             if (AllowNoteEdit && Part != null && selectedNotes.Count > 0) {
-                var track = DocManager.Inst.Project.tracks[Part.trackNo];
+                var project = DocManager.Inst.Project;
+                var track = project.tracks[Part.trackNo];
+                if (!track.TryGetExpression(project, abbr, out var descriptor)) {
+                    return;
+                }
 
-                foreach (UNote note in selectedNotes) {
-                    foreach (UPhoneme phoneme in Part.phonemes) {
-                        if (phoneme.Parent == note) {
-                            DocManager.Inst.ExecuteCmd(new SetPhonemeExpressionCommand(DocManager.Inst.Project, track, Part, phoneme, abbr, value));
+                float value = ParseValue(obj, descriptor.min, descriptor.max, descriptor.defaultValue, out bool calculate);
+                if (calculate) {
+                    foreach (UNote note in selectedNotes) {
+                        foreach (UPhoneme phoneme in Part.phonemes) {
+                            if (phoneme.Parent == note) {
+                                float exp = phoneme.GetExpression(project, track, abbr).Item1 + value;
+                                exp = Math.Min(descriptor.max, Math.Max(descriptor.min, exp));
+                                DocManager.Inst.ExecuteCmd(new SetPhonemeExpressionCommand(project, track, Part, phoneme, abbr, exp));
+                            }
+                        }
+                    }
+                } else {
+                    foreach (UNote note in selectedNotes) {
+                        foreach (UPhoneme phoneme in Part.phonemes) {
+                            if (phoneme.Parent == note) {
+                                DocManager.Inst.ExecuteCmd(new SetPhonemeExpressionCommand(project, track, Part, phoneme, abbr, value));
+                            }
                         }
                     }
                 }
@@ -565,13 +628,7 @@ public NotePropertyExpViewModel(UExpressionDescriptor descriptor, NoteProperties
         }
 
         public void SetNumericalExpressions(object? obj) {
-            float value;
-            if (obj != null && (obj is float f || float.TryParse(obj.ToString(), out f)) && f >= Min && f <= Max) {
-                value = f;
-            } else {
-                value = defaultValue;
-            }
-            parentViewmodel.SetNumericalExpressionsChanges(abbr, value);
+            parentViewmodel.SetNumericalExpressionsChanges(abbr, obj);
             this.RaisePropertyChanged(nameof(Value));
         }