HI, All
Before update to B4A 9.30 this sub worked OK:
Sub IfFormattedQR (text As String) As Boolean
Dim res As Boolean = Regex.IsMatch("\d{4,}", text)
Return res
End Sub
Strings like "TEST0000", "TEST9999"... were matched OK, as on https://regex101.com
After update to B4A v.9.30 ...