Newbie question: Detect keywords in notification

[Affe]

Trying to make my first flow, to trigger an alarm on notification (to bypass silent mode). I'm using the 'Notification posted?' block and got it to send an alarm when the app post a notification. 
But I only want it to do that when certain keywords are used in the message. And I can't figure out how to do that. Any suggestions?

[Henrik "The Developer" Lindqvist]

Assign the message output variable then in a subsequent Expression true block check its for the keywords:

1. Flow beginning
2. Notification posted: Message=msg
3. Expression true: contains(msg, "keyword") || contains(msg, "another")
4. Sound play: Sound URI=<click to pick>
5. (connect #4 OK and #3 NO to #2 IN)

[Affe]

Thank you. Works perfectly now