# Issue with char size chart node

**URL:** <https://discourse.nodered.org/t/issue-with-char-size-chart-node/74834>\
**Category:** Dashboard\
**Created:** [7 February 2023 10:33 UTC](https://discourse.nodered.org/t/issue-with-char-size-chart-node/74834 "2023-02-07T10:33:53Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![henkkas](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/henkkas/32/39844_2.png) [@henkkas](https://discourse.nodered.org/u/henkkas)\
**Post date:** [7 February 2023 10:33 UTC](https://discourse.nodered.org/t/issue-with-char-size-chart-node/74834/1 "2023-02-07T10:33:53Z")

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I make use of the chart node for simple real-time trending on my RPI. The data is updated with standard intervals.

So I send a simple payload to the chart node, like this,

![afbeelding](https://us1.discourse-cdn.com/flex026/uploads/nodered/original/3X/7/b/7b93b49b23df6a21197b5b0aadaf70db61073423.png)

Besides the data, I have one extra variable via `ui_control.xformat`, that is the format for x-axes.

It works well on firefox and edge on my PC. But with chrome or firefox on cellphone the char size of the trend changes by itself after a while (???) as you can see here. The 1 pic shows the trend with changed char size.  
After I change the period, so effectively changing `ui_control.xformat` then char size is normalized again, as shown in second pic.I tried to sneak in a extra char in xformat each time the data is updating, in the hope that it would be seen as an event change, but that didn't work.  
Also, the larger I make the trend, the char change is proportionally changed, to ridiculous sizes.

So anyone can help me with this problem?

 ![Screenshot_2023-02-07-11-16-36-217_com.android.chrome](https://us1.discourse-cdn.com/flex026/uploads/nodered/original/3X/4/b/4b075da1c368f4d0de06191c82b79df4e3199242.jpeg)

 ![Screenshot_2023-02-07-11-16-53-751_com.android.chrome](https://us1.discourse-cdn.com/flex026/uploads/nodered/original/3X/4/7/4715d3ba5d12e9cbd43edb2ee9f959d3125768ba.jpeg)

By the way, I think I have the latest software versions

![afbeelding](https://us1.discourse-cdn.com/flex026/uploads/nodered/original/3X/b/e/bea2615f51f7888f90a48e5de337ef197bd90c44.png)

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**Author:** ![system](https://us1.discourse-cdn.com/flex026/uploads/nodered/original/1X/d073cd938eafa2e558d7c2cd59003b3ef4963033.png) [@system](https://discourse.nodered.org/u/system)\
**Post date:** [9 March 2023 10:34 UTC](https://discourse.nodered.org/t/issue-with-char-size-chart-node/74834/2 "2023-03-09T10:34:10Z")

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