How to apply a Regex filter to incoming MQTT (version 2) messages?

[thenameiwantedwastak (Thenameiwantedwastaken)]

In the old version of the MQTT binding, when I created items I could apply a regex filter to incoming MQTT messages and ignore those that were not relevant:

{mqtt="<[Mosquitto:tele/Snf07/SENSOR:state:JSONPATH($.AM2301.Temperature):.*Temperature.*]"}

I’ve re-done my whole setup with the new MQTT binging using PaperUI. How can I add that filter to ensure that (in this example) non-‘Temperature’ messages are ignored by a particular item?

Cheers to anyone who can help.

• Andrew

[vzorglub (Vincent Regaud)]

This is a tasmota sonoff, correct?
Then you don’t need the regex because the JSONPATH transform pull the value of temperature only out of the json for you

[greg]

But for answering just the topic “regex a mqtt2 message” see:

[SOLVED] Help migrating MQTT 1.x binding to the new MQTT 2.x

Create a channel for each and add the transformation pattern: REGEX:(.*),.*,.*,.*,.*,.* (For the first one) If you are using text things you need to add the parameter transformationPattern="REGEX:(.*),.*,.*,.*,.*,.*" If you are using the paperUI, you can add the transformation pattern by clicking SHOW MORE in the channel definition dialog