Checkbox with REUSE_ALV_POPUP_TO_SELECT

I'm using this FM: REUSE_ALV_POPUP_TO_SELECT to display my pop-up table. My first field is a CHECKBOX.

I want my CHECKBOX field to behave as radio-button i.e. user can select only 1 box at a time. Is it possible with ALV and this FM. Please help.

Thanks Sourav.