# Creating Expression Tag Using system.tag.configure

**URL:** <https://forum.inductiveautomation.com/t/creating-expression-tag-using-system-tag-configure/100423>\
**Category:** Ignition\
**Created:** [January 3, 2025, 2:50pm UTC](https://forum.inductiveautomation.com/t/creating-expression-tag-using-system-tag-configure/100423 "2025-01-03T14:50:34Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![Anamay\_Belekar](https://avatars.discourse-cdn.com/v4/letter/a/c4cdca/32.png) [@Anamay\_Belekar](https://forum.inductiveautomation.com/u/Anamay_Belekar)\
**Post date:** [January 3, 2025, 2:50pm UTC](https://forum.inductiveautomation.com/t/creating-expression-tag-using-system-tag-configure/100423/1 "2025-01-03T14:50:34Z")

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Hi..  
I have been creating multiple OPC and UDT tags with the help of python scripts - using system.tag.configure ( baseTagPath, [tag], collisionPolicy).

Is it possible to create expression tags similar to this?  
For example, the actual expression can be passed as a string parameter (e.g. "if(true, 1, 0)" ) in the [tag] and it will create the corresponding expression tag.

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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:** [January 3, 2025, 3:12pm UTC](https://forum.inductiveautomation.com/t/creating-expression-tag-using-system-tag-configure/100423/2 "2025-01-03T15:12:20Z")

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Yes. I suggest you create an expression tag manually, then use "Copy JSON" in the tag browser to obtain the structure you will need to supply to `system.tag.configure`.

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**Author:** ![dillon](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/dillon/32/81537_2.png) [@dillon](https://forum.inductiveautomation.com/u/dillon)\
**Post date:** [January 3, 2025, 3:21pm UTC](https://forum.inductiveautomation.com/t/creating-expression-tag-using-system-tag-configure/100423/3 "2025-01-03T15:21:46Z")

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Out of curiosity, I am interested in your use case if you don't mind sharing. Is your goal to create a UI to manage machines for your Ignition Project/System, or something else?

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**Author:** ![Anamay\_Belekar](https://avatars.discourse-cdn.com/v4/letter/a/c4cdca/32.png) [@Anamay\_Belekar](https://forum.inductiveautomation.com/u/Anamay_Belekar)\
**Post date:** [January 10, 2025, 6:57am UTC](https://forum.inductiveautomation.com/t/creating-expression-tag-using-system-tag-configure/100423/4 "2025-01-10T06:57:13Z")

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Thank you so much.. that is a great help!!

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**Author:** ![Anamay\_Belekar](https://avatars.discourse-cdn.com/v4/letter/a/c4cdca/32.png) [@Anamay\_Belekar](https://forum.inductiveautomation.com/u/Anamay_Belekar)\
**Post date:** [January 10, 2025, 6:59am UTC](https://forum.inductiveautomation.com/t/creating-expression-tag-using-system-tag-configure/100423/5 "2025-01-10T06:59:00Z")

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Yes, correct.. I have to OR statuses of multiple tags corresponding to a machine via expression tag.