On-Message trigger works?

I want to capture the messages on the status line of the console window and display them elsewhere. (Status line is too small at the resolution we are designing in.) The On-Message trigger at the form level seems to fit the bill, only problem is it doen't work. Am I doing something wrong, or am I barking up the wrong tree? Details follow.

Dave

Trigger text (From level ON-MESSAGE trigger): :button_bar.status_line := MESSAGE_TEXT; (display item in button_bar block)

Forms info:
Form 4.5.6.0.7 for Windows Received on Fri Jun 30 1995 - 00:00:00 CEST