Warning at Order Release

Hi all

I want to have a warning message when i am trying to release a production order if the material is not available that is if the order status is MSPT.

Couls someone please help me. I have created a user status of order release with warning mode and assigned this status to the production order type. this gives me a warning even if the material is available.

How do i put the condition that only if the status is MSPT, then a warning message has to be displayed????

Regards

SAnjeev