Collection inaccessible from Before Header process

Question

Hi,
I have a form based on the Matrix Order application. There's a collection-based report with a bunch of text fields that can be updated and a column with a "Remove" item that basically calls a conditional Before Header process to remove the item from the collection. What I want to do is update the collection (with the values that the end-user may have entered in the updateable columns) prior to removing any item. So when the user clicks on "remove", first I do an update_member_attribute and finally I remove the item the user chose. My problem is that the updates are skipped altogether; the code is not even executed, but the removal is. It's like the collection doesn't exist at one point, but exists the next. I added an insert into a dummy table to see how many items the collection had, and it returned zero. However, the delete worked just fine. Can you have a look at my code, to see if I'm missing something obvious? Thanks a lot!
Here's the code in the Before Header:
--Here we find out how many rows in the collection
select count(*) into c from apex_collections where collection_name = 'ORDER';
insert into table1 (column1) values ('to update '||i); --This inserts "to update 0" into my dummy table.
--Update collection - nice try!
FOR x IN 1..APEX_APPLICATION.g_f01.COUNT --This code is skipped; according to the previous select, the collection has 0 rows
LOOP
c := x;
apex_collection.update_member_attribute
( p_collection_name => 'ORDER',
p_seq => APEX_APPLICATION.g_f03 (x),
p_attr_number => 4,
p_attr_value => APEX_APPLICATION.g_f01 (x) );
apex_collection.update_member_attribute
( p_collection_name => 'ORDER',
p_seq => APEX_APPLICATION.g_f03 (x),
p_attr_number => 6,
p_attr_value => APEX_APPLICATION.g_f02 (x) );
END LOOP;
--This works fine, however!!!
apex_collection.delete_member(p_collection_name => 'ORDER', p_seq => :P612_SEQ_ID);
I've tried placing the code in a "On submit" process but it's never executed. I guess that the links on report columns are not considered submits, just redirects or something else.
Gabe

Answer 1

There is data, though:
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Edited by: Gab2 on Oct 26, 2009 12:40 PM