How can I have triggers recognize partial output?

The mud has a message when a skill gets better from use. It has a main part that never changes and a few words at the end for the different skills that become better.

Example:
You have become better at sword!
You have become better at some other skill!
-------------------------
^
You see? ^
I need this part ^ recognized by MUSHclient but so far I've only gotten it to fire triggers off of complete lines of output. Though I doubt it makes any difference I plan on using this to have the client play a sound when a skill gets better. What am I missing?

use this to trigger:

You have become better at *

and it will match no matter what comes after the 'You have become better at'

or did you want specific sounds for specific skills?

Ah crap, of course. I don't know why I missed something so obvious. Using Gmud for so long has made me dumb. It's terrible.

hehe :)