topic MQTT things property cannot trigger subcription in ThingWorx Developers

MQTT things property cannot trigger subcription

QU_9823297 — Fri, 16 Apr 2021 04:09:24 GMT

Hi all,
I am using MQTT extension 3.0 to connect to my MQTT broker. When thing receives messages on the right topic, its properties can change but subscription for that data change is not triggered. I tried to change data by Composer UI then the subscription is triggered. I have set visibility to ThingworxPeristentProvider for System User by reading similar topics but the situation is not changed
Can someone help me?
Thanks

Re: MQTT things property cannot trigger subcription

slangley — Thu, 22 Apr 2021 19:25:30 GMT

Hi @QU_9823297.

Make sure your subscription is enabled. Also, have you checked the script logs for any errors?

Regards.

--Sharon

Re: MQTT things property cannot trigger subcription

Alessio — Thu, 22 Apr 2021 19:55:00 GMT

I believe that if the property change happens via the MQTT Extension (ThingWorx 9.1), the DataChange event not raised.

If this is the case I would consider that a bug. I also think I have filed it a while ago.

Please open a ticket with Tech Support.