Please review this documentation for information about the message manifest.

• http://help.openspan.com/80/Innovations/Message_Manifest_Properties,_Methods,_and_Events.htm
• http://help.openspan.com/80/Innovations/Message_Manifest_Component_Overview.htm

You will define your messages in the Project properties. Under the Application tab, there is a option for Message Definitions where you can customize the message, code, caption, button, icon, and default button. I don't have an implementation at hand for you but this should get you a good idea of it...