# Ui\_template doesn't show old data

**URL:** <https://discourse.nodered.org/t/ui-template-doesnt-show-old-data/30932>\
**Category:** Dashboard\
**Created:** [30 July 2020 14:58 UTC](https://discourse.nodered.org/t/ui-template-doesnt-show-old-data/30932 "2020-07-30T14:58:35Z")\
**Posts on this page:** 1\
**Showing post:** 2

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**Author:** ![dceejay](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/dceejay/32/38_2.png) [@dceejay](https://discourse.nodered.org/u/dceejay)\
**Post date:** [31 July 2020 08:34 UTC](https://discourse.nodered.org/t/ui-template-doesnt-show-old-data/30932/2 "2020-07-31T08:34:32Z")

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the template can optionally save the last date sent to it... but for a chart that is tricky as that means you would have to either send all the data a one blob - so that it has all the data to re-plot - or you have to cache the data points yourself and resend them on a reconnection.

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_[View the full topic](https://discourse.nodered.org/t/ui-template-doesnt-show-old-data/30932)._