Add items to GUI Group of radio buttons

[Damir]

I'm using build 935. On User interface diagram in a screen element I'm trying to model a group of radio buttons. by following the EA help so far I've figured out that I should place a GUIelement type of element and stereotype it to "group". I did that.

Problem - I couldn't figure out hot to add multiple radio buttons to this group. it by default displays name of the group next to one radio button. there is no way to add additional radio buttons and set their names to this group. ?

thanks
Damir