Oracle Forms

Dear People,
I use forms along with 10g.I have create a record group RG9 with query SELECT DNAME FROM DEPT;.now how to populate it to a list item?.i tried it using a the following code in When_new_form_instance trigger.The code is as follows,

declare
a number;
begin
	a:=populate_group('RG9');
               add_list_element('block3.list6',1,a,a);
end;

It doesnt throw me any error.but unable to populate data into the list. pls do help me to make corrections in the above code.

With Regards
VIDS