Have the same problem in B4a 13.30 - https://www.b4x.com/android/forum/t...erargs-designerproperties.143139/#post-906944
And got an error
Converted HashMap to Map and it works OK.
B4X:
Public Sub Test(DesignerArgs As DesignerArgs)
For Each k As Object In DesignerArgs.DesignerProperties.Keys
Log(k)
Next
End Sub
And got an error
java.lang.RuntimeException: method not supported. Use For Each instead.
Converted HashMap to Map and it works OK.