Can't use numbers as labels and convert string to numbers

[irom77]

It fails when I am trying to use numbers for labels, i.e. InfoIdx: '{.LicenseCapacityInfoIdx}' . Once I change to "9" and "10" in JSON below it is fine. But again when I am using value i.e. CurrUsage: '{.LicenseCapacityCurrUsage}' it fails until I remove 'Mbps" ... Is it possible to use some function to help convert strings to numbers (for values) and numbers to strings (for labels)?

{ "AgLicenseCapacityInfoTable":[{ "LicenseCapacityInfoIdx": 9, "LicenseCapacityPeakUsage": "2000Mbps", "LicenseCapacityCurrUsage": "95.21 Mbps", "LicenseCapacityPeakTimeStamp": 1620812697 }, { "LicenseCapacityInfoIdx": 10, "LicenseCapacityPeakUsage": "284 CPS", "LicenseCapacityCurrUsage": "2 CPS", "LicenseCapacityPeakTimeStamp": 0 }] }