# Detect when context's variable changes its value

**URL:** <https://discourse.nodered.org/t/detect-when-contexts-variable-changes-its-value/1698>\
**Category:** Feature Requests\
**Created:** [19 July 2018 14:51 UTC](https://discourse.nodered.org/t/detect-when-contexts-variable-changes-its-value/1698 "2018-07-19T14:51:08Z")\
**Posts on this page:** 2\
**Page:** 2

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**Author:** ![Nodi.Rubrum](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/nodi.rubrum/32/107482_2.png) [@Nodi.Rubrum](https://discourse.nodered.org/u/Nodi.Rubrum)\
**Post date:** [30 May 2022 14:28 UTC](https://discourse.nodered.org/t/detect-when-contexts-variable-changes-its-value/1698/21 "2022-05-30T14:28:10Z")

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I grabbed the flow, testing it... but when I change the sensor 1 context, I do not see the MakeObservable event fire? Am misunderstanding or doing something wrong?

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<div class="post-metadata">

**Author:** ![Nodi.Rubrum](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/nodi.rubrum/32/107482_2.png) [@Nodi.Rubrum](https://discourse.nodered.org/u/Nodi.Rubrum)\
**Post date:** [30 May 2022 14:36 UTC](https://discourse.nodered.org/t/detect-when-contexts-variable-changes-its-value/1698/22 "2022-05-30T14:36:10Z")

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Never mind... it is working... Thought i was going to see something in node debug pop. But is the node notification event! Slick.

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