# Using subflow environment variable to set mqtt topic

**URL:** <https://discourse.nodered.org/t/using-subflow-environment-variable-to-set-mqtt-topic/15331>\
**Category:** General\
**Created:** [9 September 2019 20:53 UTC](https://discourse.nodered.org/t/using-subflow-environment-variable-to-set-mqtt-topic/15331 "2019-09-09T20:53:40Z")\
**Posts on this page:** 1\
**Page:** 2

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**Author:** ![Colin](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/colin/32/17040_2.png) [@Colin](https://discourse.nodered.org/u/Colin)\
**Post date:** [9 November 2022 10:37 UTC](https://discourse.nodered.org/t/using-subflow-environment-variable-to-set-mqtt-topic/15331/24 "2022-11-09T10:37:05Z")

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Closed on 9 November 2022 10:37 UTC



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