# A guide to understanding 'Persistent Context'

**URL:** <https://discourse.nodered.org/t/a-guide-to-understanding-persistent-context/4115>\
**Category:** General\
**Created:** [19 October 2018 10:13 UTC](https://discourse.nodered.org/t/a-guide-to-understanding-persistent-context/4115 "2018-10-19T10:13:24Z")\
**Posts on this page:** 1\
**Showing post:** 45

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**Author:** ![Sineos](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/sineos/32/3440_2.png) [@Sineos](https://discourse.nodered.org/u/Sineos)\
**Post date:** [30 October 2018 06:21 UTC](https://discourse.nodered.org/t/a-guide-to-understanding-persistent-context/4115/45 "2018-10-30T06:21:13Z")

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Is this already implemented for the `change node`? E.g

![grafik](https://us1.discourse-cdn.com/flex026/uploads/nodered/original/2X/5/5ffc5ba720ebefb2d832e1977bfb5aea3d48dc89.png)

At least the above example and also the information in the [design concept](https://github.com/node-red/node-red/wiki/Design:-Persistable-Context#how-to-use-in-change-node-or-other-nodes) do not seem to work.

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_[View the full topic](https://discourse.nodered.org/t/a-guide-to-understanding-persistent-context/4115)._