It seems that now, each button can only be linked to a value as a boolean. Particularly in the case of radio groups, it seems that the button should actually be linked to a value plus ‘value of that value’. So for instance, a radio group of four buttons could be linked to one value and set it to 1,2,3 or 4 depending on which is switched.
A simple implementation now would involve a buttonlistener and value listener and specific code to hand link the controls? Or maybe a value bridge that links n boolean values to one integer value?