Howdy, As I'm developing my first production APEX app, I thought I'd try to reproduce your issue. No such luck, at least on APEX v3.1.0 with the PL/SQL HTTP server on 11g (what version are you on?) -- it worked fine. Here's what I did: -- Created your show_rda procedure in the app owner's schema. -- Created a new app, then a new page -- a form based on a table. -- Added a computation to populate the PK column when null. -- Tested the page to make sure it displayed a row from the table. -- Added a dynamic PL/SQL region whose source is "show_rda (:P1_QUOTA);" This worked fine for me. Not that it necessarily helps you, but thought you'd like to know that conceptually it should work. GL! Rich > I have a weird issue with APEX that I cannot put my finger on. > Basically I'm generating a custom HTML with a PL/SQL procedure that > needs only one variable input. -- //www.freelists.org/webpage/oracle-l