#53 RadioSelect confuses multiple instances

[Travis Revis]

I am trying to use two RadioSelect widgets in a window. Both are of type checkbutton.
When I tick a checkbutton in one RadioSelect widget, the correcponding checkbutton in the second RadioSelect widget is also ticked.

I am attaching a modified verson of the example text provided in the reference manual. I have modified it to include a mainline and to add a second 'vertical, using checkbuttons' RadioSelect widget.

[Emilio Barrios]

I have same issue and wondering if there is a workaround or tip&trick ?