drop down list

[hudo]

--WHEN-NEW-FORM-INSTANCE

DECLARE


group_id RecordGroup;
list_id Item := Find_Item('MYBLOCK.THELIST');
status NUMBER;
rg_name varchar2(40) := 'recgroup';

BEGIN


clear_list(list_id);
group_id := Find_Group(rg_name);
IF NOT id_null(group_id) then
	Delete_Group(group_id);
End if;
group_id := Create_Group_From_Query(rg_name,
'SELECT ENAME FROM EMP');

status := Populate_Group(rg_name);
Populate_List(list_id, group_id);

END;

What is wrong here ?

These errors occur:

FRM-30351: No list elements defined for list item.


FRM-41334: Invalid record group for list population.