No data found on Report based on a collection

Hi all,
I got a page with this 'after-header' process :
begin
  if(apex_collection.collection_exists(p_collection_name => 'users')) then
    apex_collection.delete_collection(p_collection_name => 'users');
  end if;
  apex_collection.create_collection_from_query(
    p_collection_name => 'users',
    p_query => 'select user_name from demo_users');
end;And then, I try to display the collection data in a report, like with this SQL statement.
select *
from apex_collections
where collection_name='users'I got a 'No data found' for this report... I try this very basic example to understand collections, and I don't know what I'm missing...
Thanks a lot
Dovik

Hi,
No problem
Check collection naming
http://download.oracle.com/docs/cd/E14373_01/appdev.32/e11838/advnc.htm#CIHHCGGD
Have nice day
Br,Jari

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