# Ignition version 8.1.15 unknown symbol

**URL:** <https://forum.inductiveautomation.com/t/ignition-version-8-1-15-unknown-symbol/56892>\
**Category:** Ignition\
**Tags:** ignition80, perspective, scripting\
**Created:** [March 7, 2022, 8:52am UTC](https://forum.inductiveautomation.com/t/ignition-version-8-1-15-unknown-symbol/56892 "2022-03-07T08:52:06Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![tamerplc](https://avatars.discourse-cdn.com/v4/letter/t/d78d45/32.png) [@tamerplc](https://forum.inductiveautomation.com/u/tamerplc)\
**Post date:** [March 7, 2022, 8:52am UTC](https://forum.inductiveautomation.com/t/ignition-version-8-1-15-unknown-symbol/56892/1 "2022-03-07T08:52:06Z")

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i did upgrade on test environment from version 8.1.13 to 8.1.5 . i noticed unknown symbol in script transformation . added to that when pass parm to xy chart which on bottom dock view . it not updated . i had to refresh the binding while in version 8.1.13 it working fine .

![image](https://us1.discourse-cdn.com/inductiveautomation/original/3X/6/7/67e56ecf2e88548626c48bfd7951cebc80d28af9.png)

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**Author:** ![Transistor](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/transistor/32/3380_2.png) [@Transistor](https://forum.inductiveautomation.com/u/Transistor)\
**Post date:** [March 7, 2022, 9:07am UTC](https://forum.inductiveautomation.com/t/ignition-version-8-1-15-unknown-symbol/56892/2 "2022-03-07T09:07:09Z")

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That’s the ‘information’ icon. Do you get any further info if you hover over it?

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**Author:** ![tamerplc](https://avatars.discourse-cdn.com/v4/letter/t/d78d45/32.png) [@tamerplc](https://forum.inductiveautomation.com/u/tamerplc)\
**Post date:** [March 7, 2022, 9:10am UTC](https://forum.inductiveautomation.com/t/ignition-version-8-1-15-unknown-symbol/56892/3 "2022-03-07T09:10:36Z")

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Nothing appears.

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**Author:** ![tamerplc](https://avatars.discourse-cdn.com/v4/letter/t/d78d45/32.png) [@tamerplc](https://forum.inductiveautomation.com/u/tamerplc)\
**Post date:** [March 8, 2022, 10:17am UTC](https://forum.inductiveautomation.com/t/ignition-version-8-1-15-unknown-symbol/56892/4 "2022-03-08T10:17:19Z")

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Any guidance on that unknown symbol which only appears once i upgraded to version 8.1.15

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<div class="post-metadata">

**Author:** ![tamerplc](https://avatars.discourse-cdn.com/v4/letter/t/d78d45/32.png) [@tamerplc](https://forum.inductiveautomation.com/u/tamerplc)\
**Post date:** [March 10, 2022, 9:06am UTC](https://forum.inductiveautomation.com/t/ignition-version-8-1-15-unknown-symbol/56892/5 "2022-03-10T09:06:18Z")

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Update :  
issue appears Only on version 8.1.15  
on version 13 and 14 xychart are working fine and not showing this unknown symbol .