# Issue with one of two historian tags on a perspective page

**URL:** <https://forum.inductiveautomation.com/t/issue-with-one-of-two-historian-tags-on-a-perspective-page/63341>\
**Category:** Ignition\
**Tags:** perspective\
**Created:** [August 23, 2022, 5:31pm UTC](https://forum.inductiveautomation.com/t/issue-with-one-of-two-historian-tags-on-a-perspective-page/63341 "2022-08-23T17:31:40Z")\
**Posts on this page:** 8\
**Page:** 1

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**Author:** ![zacharyw.larson](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/zacharyw.larson/32/23749_2.png) [@zacharyw.larson](https://forum.inductiveautomation.com/u/zacharyw.larson)\
**Post date:** [August 23, 2022, 5:31pm UTC](https://forum.inductiveautomation.com/t/issue-with-one-of-two-historian-tags-on-a-perspective-page/63341/1 "2022-08-23T17:31:40Z")

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I have two custom values each with dataset [1x71] from historian bindings on a perspective page.

For some reason, since the last two resets, one of them has been toggling between dataset [1x71] and dataset[0x0].

I am using Ignition 8.1.  
Is there a known cause or solution to this?

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**Author:** ![jlandwerlen](https://avatars.discourse-cdn.com/v4/letter/j/bc8723/32.png) [@jlandwerlen](https://forum.inductiveautomation.com/u/jlandwerlen)\
**Post date:** [August 23, 2022, 5:49pm UTC](https://forum.inductiveautomation.com/t/issue-with-one-of-two-historian-tags-on-a-perspective-page/63341/2 "2022-08-23T17:49:21Z")

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I think you are going to need to include a lot more information than that 🙂

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**Author:** ![zacharyw.larson](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/zacharyw.larson/32/23749_2.png) [@zacharyw.larson](https://forum.inductiveautomation.com/u/zacharyw.larson)\
**Post date:** [August 23, 2022, 5:52pm UTC](https://forum.inductiveautomation.com/t/issue-with-one-of-two-historian-tags-on-a-perspective-page/63341/3 "2022-08-23T17:52:18Z")

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On all my pages with more than one historian binding, I have this issue on some of them.

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**Author:** ![bkarabinchak.psi](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/bkarabinchak.psi/32/83567_2.png) [@bkarabinchak.psi](https://forum.inductiveautomation.com/u/bkarabinchak.psi)\
**Post date:** [August 23, 2022, 5:57pm UTC](https://forum.inductiveautomation.com/t/issue-with-one-of-two-historian-tags-on-a-perspective-page/63341/4 "2022-08-23T17:57:57Z")

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No property changes on any of them? Can you show the binding that is being problematic? And if its referencing a tag, show that tag’s configuration as well?

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**Author:** ![Matrix\_Engineering](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/matrix_engineering/32/19781_2.png) [@Matrix\_Engineering](https://forum.inductiveautomation.com/u/Matrix_Engineering)\
**Post date:** [August 23, 2022, 6:45pm UTC](https://forum.inductiveautomation.com/t/issue-with-one-of-two-historian-tags-on-a-perspective-page/63341/5 "2022-08-23T18:45:41Z")

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[0x0] would suggest to me that the data source is intermittently returning no results.

I believe from your other threads that you can’t share detail due to NDA etc. Your fastest progression may be a ticket with support.

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**Author:** ![pturmel](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/pturmel/32/3295_2.png) [@pturmel](https://forum.inductiveautomation.com/u/pturmel)\
**Post date:** [August 23, 2022, 6:49pm UTC](https://forum.inductiveautomation.com/t/issue-with-one-of-two-historian-tags-on-a-perspective-page/63341/6 "2022-08-23T18:49:15Z")

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It is also possible that your start date and end date are changing separately, briefly yielding a backward interval (which will have no results). Add some logging to your bindings.

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<div class="post-metadata">

**Author:** ![zacharyw.larson](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/zacharyw.larson/32/23749_2.png) [@zacharyw.larson](https://forum.inductiveautomation.com/u/zacharyw.larson)\
**Post date:** [August 23, 2022, 6:53pm UTC](https://forum.inductiveautomation.com/t/issue-with-one-of-two-historian-tags-on-a-perspective-page/63341/7 "2022-08-23T18:53:53Z")

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How do you add logging to a historian binding?

Configured:  
Wide  
point count, 1 count  
time range 1, minute  
polling 30 seconds  
direct, 71 tags, aggregate default  
last value  
options enabled, dataset  
no transform

I will look at the other pages to see if there is a patter with the configuration.  
On the page with the two historian bindings though, they are both configured the same.  
One was populating consistently, and the other was not for a few hours.

Ignition 8.1.0, updating in a month or two though.

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<div class="post-metadata">

**Author:** ![pturmel](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/pturmel/32/3295_2.png) [@pturmel](https://forum.inductiveautomation.com/u/pturmel)\
**Post date:** [August 23, 2022, 6:55pm UTC](https://forum.inductiveautomation.com/t/issue-with-one-of-two-historian-tags-on-a-perspective-page/63341/8 "2022-08-23T18:55:03Z")

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If you have a transform script, do it there. Or perhaps use propertyChange actions on the properties you are referencing in that binding.