Take Snapshot from Back End.

Hi Guys,

Can any one help me to take snapshot from back end? I'm trying to run the following but I'm sure there is missing something because in UI we select all items and press snapshot. How we can simulate selection?:-

begin-- Call the procedurestockcounts.snap_shot(io_status => :io_status,io_error_message => :io_error_message,io_number_records => :io_number_records,i_stock_count_id => :i_stock_count_id,   --GIVE SC_IDi_stock_count_loc_id => :i_stock_count_loc_id,  --Give STORE_IDi_user_id => :i_user_id,   --GIVE  USER_IDi_limit_size => :i_limit_size);