Reg Drop Down in AVL Grid display

Hi All,

My requirement is to develop an ALV Grid report with 10 some 10 fields. on that one field is editable. for that editable field i need to make it as Drop Down. I am using FM "REUSE_ALV_GRID_DISPLAY_LVC". In field catalog i have added " wa_fcat-drdn_hndl = '1'. ". the problem is the field is displayed as drop down but no values are getting populated.

Kindly tell me the solution.

Thanks in advance.