Handling a MQTT String payload

I'm a bit lost on the approach of how to deal with a string from an MQTT message. An example of the payload is "122 - Room temperature limitation" or "114 - Heizbetrieb Komfort". How do I transfer that to an Indigo Variable, or alternatively an Indigo Device that becomes true when it sees "114" in the String? Any clues appreciated - thank you!

I've never seen an MQTT payload like that. That's an unusual device. Unfortunately, you're not going to be able to use a Shim device for that. So you'll want your trigger to do the copy to variable directly instead of sending it to the Shims plugin. So change the trigger by unchecking the "Queue Message" box (and clear the Message Type field), then add an action to the trigger like:

Ahh! Perfect. Thank you so much