Checkbox for ALV grid column

Hi ,

I am using  cl_gui_alv_grid class .

I have made the field catalog for 3 column "A" ,"B" ,"C" as check box .

I have requirement that if I select one check box of a column(A) then other check box in that column should be unchecked .

Kindly suggest me how to proceed .

Regards,
Saurabh