# Easy Chart on Template with UDT's

**URL:** <https://forum.inductiveautomation.com/t/easy-chart-on-template-with-udts/19233>\
**Category:** Ignition\
**Created:** [August 13, 2018, 11:15pm UTC](https://forum.inductiveautomation.com/t/easy-chart-on-template-with-udts/19233 "2018-08-13T23:15:55Z")\
**Posts on this page:** 6\
**Page:** 1

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**Author:** ![ryanastiefes](https://avatars.discourse-cdn.com/v4/letter/r/47e85d/32.png) [@ryanastiefes](https://forum.inductiveautomation.com/u/ryanastiefes)\
**Post date:** [August 13, 2018, 11:15pm UTC](https://forum.inductiveautomation.com/t/easy-chart-on-template-with-udts/19233/1 "2018-08-13T23:15:55Z")

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Using Ignition 7.7.5

Here’s my problem:

I’m getting this error using an Easy Chart in a Template with Data Type’s

 ![](https://us1.discourse-cdn.com/inductiveautomation/original/2X/8/8a3ecaca507bd1b68f20643028465bc2a7094de7.PNG)

I’m using the Cell Update table to pass my Data Types in through the Meta.TagPath. The DataTypes are all trending on my Easy Chart on my client. But the error keeps showing up.

 ![](https://us1.discourse-cdn.com/inductiveautomation/original/2X/f/fd3fb59039bec1b19a3d7092c53d8b89c5d17757.PNG)

Am I forgetting a path somewhere for this error to keep showing up?

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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:** [August 13, 2018, 11:52pm UTC](https://forum.inductiveautomation.com/t/easy-chart-on-template-with-udts/19233/2 "2018-08-13T23:52:00Z")

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~~Cell update bindings don’t support operations like concatenation - they have to be a direct reference to a valid string that will be inserted directly into the table before it’s used.~~

~~You’ll have to use custom properties to define the different fields you’re reading in, then refer to those custom properties in the cell update binding.~~

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**Author:** ![Chris\_Taylor](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/chris_taylor/32/3315_2.png) [@Chris\_Taylor](https://forum.inductiveautomation.com/u/Chris_Taylor)\
**Post date:** [August 14, 2018, 12:59pm UTC](https://forum.inductiveautomation.com/t/easy-chart-on-template-with-udts/19233/3 "2018-08-14T12:59:25Z")

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Errr… I’m confused now  
This is exactly what I do, and Travis apparently 🙂

[https://www.inductiveuniversity.com/video/indirect-easy-chart/7.9?r=%2Fvideo%2Fsearch%2F%3Fq%3Deasy%20chart%26checked\_topics%3D](https://www.inductiveuniversity.com/video/indirect-easy-chart/7.9?r=%2Fvideo%2Fsearch%2F%3Fq%3Deasy%20chart%26checked_topics%3D)

Is there a difference I’m not seeing?

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<div class="post-metadata">

**Author:** ![ryanastiefes](https://avatars.discourse-cdn.com/v4/letter/r/47e85d/32.png) [@ryanastiefes](https://forum.inductiveautomation.com/u/ryanastiefes)\
**Post date:** [August 14, 2018, 3:07pm UTC](https://forum.inductiveautomation.com/t/easy-chart-on-template-with-udts/19233/4 "2018-08-14T15:07:10Z")

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I’m confused to, I do this all the time with no errors caused on other projects. Right now Ignition is not throwing out the error but nothing has been changed.

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<div class="post-metadata">

**Author:** ![ryanastiefes](https://avatars.discourse-cdn.com/v4/letter/r/47e85d/32.png) [@ryanastiefes](https://forum.inductiveautomation.com/u/ryanastiefes)\
**Post date:** [August 14, 2018, 3:22pm UTC](https://forum.inductiveautomation.com/t/easy-chart-on-template-with-udts/19233/5 "2018-08-14T15:22:31Z")

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It looks like the error is only getting thrown around when Designer is opened. If closed the error does not show up.

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<div class="post-metadata">

**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:** [August 14, 2018, 3:38pm UTC](https://forum.inductiveautomation.com/t/easy-chart-on-template-with-udts/19233/6 "2018-08-14T15:38:26Z")

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Whoops - I was thinking of the wrong bit. You can’t run _expressions_ in cell update bindings, but basic concatenation will work.

However, I think the core problem here is that you’re working inside a template. Because inside the template configuration, there’s no UDT instance assigned, the concatenation fails to make a “real” tagpath (check out the tagpath column inside your screenshot - it’s blank, up to the fixed text defined).

You can just ignore these messages, since looking up the tagpaths is one of the first things the historian does (so it’s not “expensive” or you can switch the designer to comm mode off while you’re working on these templates.