# Jsonpath help - condition in path mqtt binding

**URL:** <https://community.openhab.org/t/jsonpath-help-condition-in-path-mqtt-binding/145213>\
**Category:** Beginners\
**Tags:** jsonpath\
**Created:** [March 13, 2023, 2:35pm UTC](https://community.openhab.org/t/jsonpath-help-condition-in-path-mqtt-binding/145213 "2023-03-13T14:35:43Z")\
**Posts on this page:** 1\
**Showing post:** 2

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**Author:** ![rlkoshak](https://community.openhab.org/user_avatar/community.openhab.org/rlkoshak/32/75251_2.png) [@rlkoshak](https://community.openhab.org/u/rlkoshak)\
**Post date:** [March 13, 2023, 3:10pm UTC](https://community.openhab.org/t/jsonpath-help-condition-in-path-mqtt-binding/145213/2 "2023-03-13T15:10:36Z")

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> [@MQTT 2.5 M1+ How to implement the equivalent to MQTT1 REGEX filters](https://community.openhab.org/t/mqtt-2-5-m1-how-to-implement-the-equivalent-to-mqtt1-regex-filters/68350):
>
> Problem In the MQTT1 binding there was a feature that let us filter messages published to a given topic and only pass those that match a given REGEX to the transformation and/or on to the Item. This was useful to handle devices that publish messages to a single well known topic for all their devices. For example, the official firmware from the vendor of Shelly devices have a request/response protocol over MQTT to get meta data about the devices (IP address, MAC address, firmware version, whethe…

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