Radio button in webdynpro

Hi All,

I want to display and toggle between two radio buttons, I have tried ways mentioned in few posts, but still could nt get it.

I hv attached the screen shot. In the wddoinit method of my view i have added code (attached the code also).

but still both my RB are displayed as selected. Also Please throw some light on what occassion we use group by index and group by key.

Regards,