Radiobutton (get item or value)? Bootstrap 4

Hi, I’m trying to get an item or value from a Radiobutton but I think it’s different in bs4.
Ive tried:
Radiobutton.value()
Radiobutton.getValue(n)
Radiobutton.item()

This is the way I want to use it

Function Radiobutton9_onchange()
    If Radiobutton9.value(1) = True Then.......etc......

Thanks
Will

Check the sample:

Function Radiobutton1_onchange()
  MsgBox "Choice is " & Radiobutton1.value
End Function

I couldn’t see it in there, I have found it though, it’s just an equals sign followed by the item number.

Function Radiobutton9_onchange()
    If Radiobutton9.value = 1  Then........................

Thanks.