Oracle Forms

Hi all,

I have 2 canvas (1 canvas having database block items ,2nd having control block items & FIND button also in Control block), My requirement is when i select any one of the lov and click on the find button(in 2nd canvas , control block canvas) then it navigates to the database block canvas and displays records, at that time i want to display record count message. for this i add on-count trigger on form level, but not working, Could any one suggest me please.

1. declare
2.   cnt number := 1;
3. begin
4.   go_block('Blockname');
5.   first_record;
7.   while :system.last_record = 'FALSE'
8.   loop
9.   cnt := cnt + 1;
10.   next_record;
11.   end loop;
12. message('There are ' || cnt || ' records in this block');
13. end;

Thank You