POAPPRV Customization to Notification

All,

We would like to include PO requisition number and Original requester name in the PO approval notification.

I don't know much about how this can be customized in POAPPRV workflow.

But I see POAPPRV -> Messages -> PO_PO_APPROVE_PDF & PO_PO_APPORVE messages and following text being printed in the notification.

I believe I should add a attribute in POAPPRV and refer that attribute into this message.

My idea was to create a db function to get requisition number and requested name using PO number as parameter.

Could you help me how I can add that function as a attribute, so it will be availble for me to add it in the notification?