# Accessing Tag Property in a Transaction Group Expression Item

**URL:** <https://forum.inductiveautomation.com/t/accessing-tag-property-in-a-transaction-group-expression-item/31597>\
**Category:** Ignition\
**Created:** [January 24, 2020, 3:11pm UTC](https://forum.inductiveautomation.com/t/accessing-tag-property-in-a-transaction-group-expression-item/31597 "2020-01-24T15:11:30Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![md.szyman](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/md.szyman/32/9240_2.png) [@md.szyman](https://forum.inductiveautomation.com/u/md.szyman)\
**Post date:** [January 24, 2020, 3:11pm UTC](https://forum.inductiveautomation.com/t/accessing-tag-property-in-a-transaction-group-expression-item/31597/1 "2020-01-24T15:11:30Z")

</div>

In a Transaction Group, I’m trying to create an Expression Item that evaluates to the value of the Engineering Units for a tag in the group.

I’ve set it up with the expression of `{[~]Tag.engUnit}`, `{[~]Tag/engUnit}`, and many other permutations of capitalizing `engUnit`/`EngUnit`/etc.

Every time, the expression item just evaluates to the value of `Tag`, and not its units.

Am I doing something wrong here?