Thanks Martin - that Debug Dialog was exactly what I needed. The regex tester was giving me a match, but it turns out that there's a lot more inside the notification than I had realized. I've got a lot to go on now. I appreciate it!
I am trying to set up a new trigger for Notification on Statusbar Displayed, matching on Text. I am able to get it to match on 'contains text' but not matches regex. I have tested the regex, and am able to fully match the string. I'm sure I'm just entering it incorrectly (I'm just putting the regex ...