Oracle Forms Personalization

 I have a requirement to see if the paygroup is entered along with the bank account name on the payment batch screen. I have a form personalization and I want it to error if the user enters a particular bank but leaves pay group null. I have a trigger event as when_new_block_instance, trigger_object as bat_actions.  In the actions window, I have the message type error with the message text. It works and gives me the error message once I click on the actions button but after I click ok on the error message, instead of staying on the same screen, it