Radio button and Check Box

My reuirement is

Parameters : p_p1 TYPE c RADIOBUTTON GROUP loc,

p_p2 TYPE c RADIOBUTTON GROUP loc,

p_p3 TYPE c RADIOBUTTON GROUP loc.

PARAMETERS: p_ch AS CHECKBOX.

If I select any of the radio button p_p1 , p_p2 and p_p3

checkbox p_ch should be select automatically

Thanks

Umesh