Is there away to create message window within EPDM when a file changes State?

I don't want a message to appear in their inbox, I need an actual message to appear on the screen when the state changes as a reminder to update \ export certain file types that unfortunately cannot be exported ( ) from what it seems. I tried using Dispatch along with a Data Card (DC) variable to help trigger the message. However nothing appears to occur. What am I overlooking or is this not possible either?