# Pass Tag History data as view parameter

**URL:** <https://forum.inductiveautomation.com/t/pass-tag-history-data-as-view-parameter/43553>\
**Category:** Ignition\
**Created:** [February 18, 2021, 6:27am UTC](https://forum.inductiveautomation.com/t/pass-tag-history-data-as-view-parameter/43553 "2021-02-18T06:27:04Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![Adriaan.leRoux](https://avatars.discourse-cdn.com/v4/letter/a/bbce88/32.png) [@Adriaan.leRoux](https://forum.inductiveautomation.com/u/Adriaan.leRoux)\
**Post date:** [February 18, 2021, 6:27am UTC](https://forum.inductiveautomation.com/t/pass-tag-history-data-as-view-parameter/43553/1 "2021-02-18T06:27:04Z")

</div>

I have a chart in a view that I want to use as a template.

This chart’s series data is bound to the view’s parameter using an expression, the view parameter is an array. When I do this I get no errors on the chart, but when I use this view and link that parameter to a history tag I get the error: “Expected member “path” to be non-null”.

What am I doing wrong here?