# Expression Tag Easy Chart

**URL:** <https://forum.inductiveautomation.com/t/expression-tag-easy-chart/86413>\
**Category:** Ignition\
**Tags:** vision\
**Created:** [February 27, 2024, 8:15am UTC](https://forum.inductiveautomation.com/t/expression-tag-easy-chart/86413 "2024-02-27T08:15:39Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Ben\_Givens](https://avatars.discourse-cdn.com/v4/letter/b/ce7236/32.png) [@Ben\_Givens](https://forum.inductiveautomation.com/u/Ben_Givens)\
**Post date:** [February 27, 2024, 8:15am UTC](https://forum.inductiveautomation.com/t/expression-tag-easy-chart/86413/1 "2024-02-27T08:15:39Z")

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Hi I have created an expression tag see below. I have made this historical and used the internal database. You can see a value in the tag browser but that value will not show on my easy chart. None expression tags seem to work okay.

 ![image](https://us1.discourse-cdn.com/inductiveautomation/original/3X/4/f/4f944c9f66e981e25a5800c1c226d72e5a4ffc7d.png)  
 ![image](https://us1.discourse-cdn.com/inductiveautomation/original/3X/b/7/b7249d4b114aea2aeb50895a3cb64ce19b0da2bb.png)

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**Author:** ![paul-griffith](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/paul-griffith/32/37249_2.png) [@paul-griffith](https://forum.inductiveautomation.com/u/paul-griffith)\
**Post date:** [February 27, 2024, 4:01pm UTC](https://forum.inductiveautomation.com/t/expression-tag-easy-chart/86413/2 "2024-02-27T16:01:01Z")

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Why are you using `[BG/default]` as the tag provider? Your tag provider is just default, per your screenshot, and I'm pretty sure a slash isn't legal for a tag provider name anyways.