# It is not possible to reference a Tag in Alarm.Label for a UDT

**URL:** <https://forum.inductiveautomation.com/t/it-is-not-possible-to-reference-a-tag-in-alarm-label-for-a-udt/62619>\
**Category:** Ignition\
**Tags:** ignition81\
**Created:** [August 3, 2022, 10:23am UTC](https://forum.inductiveautomation.com/t/it-is-not-possible-to-reference-a-tag-in-alarm-label-for-a-udt/62619 "2022-08-03T10:23:01Z")\
**Posts on this page:** 6\
**Page:** 1

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**Author:** ![ISEMAREN\_AAG](https://avatars.discourse-cdn.com/v4/letter/i/82dd89/32.png) [@ISEMAREN\_AAG](https://forum.inductiveautomation.com/u/ISEMAREN_AAG)\
**Post date:** [August 3, 2022, 10:23am UTC](https://forum.inductiveautomation.com/t/it-is-not-possible-to-reference-a-tag-in-alarm-label-for-a-udt/62619/1 "2022-08-03T10:23:01Z")

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Good morning.

In Ignition **8.1.15,** I have noticed that it is not possible to **reference a Tag in the Alarm.Label** property for a **UDT**. If a Tag is referenced, the Label value is **null**.  
Instead, with “DisplayPath” it works correctly.

**Definition of the Alarm in the UDT:**

 ![image](https://us1.discourse-cdn.com/inductiveautomation/original/3X/d/8/d86a2e427daca7c96578f035b54a4b87027f38cd.png)

* * *

**Alarm on an instance of the UDT:**  
 ![image](https://us1.discourse-cdn.com/inductiveautomation/original/3X/7/9/79209fee4a158bbb9217e1cb427dae7740c37d47.png)

Best Regards.

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**Author:** ![nminchin](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/nminchin/32/6911_2.png) [@nminchin](https://forum.inductiveautomation.com/u/nminchin)\
**Post date:** [August 3, 2022, 11:59am UTC](https://forum.inductiveautomation.com/t/it-is-not-possible-to-reference-a-tag-in-alarm-label-for-a-udt/62619/2 "2022-08-03T11:59:43Z")

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Don’t they need curly braces around the tag paths?

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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 3, 2022, 12:12pm UTC](https://forum.inductiveautomation.com/t/it-is-not-possible-to-reference-a-tag-in-alarm-label-for-a-udt/62619/3 "2022-08-03T12:12:01Z")

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I’m on 8.1.19 and do not see an issue. To test, use an expression with static text, like ‘test’.

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<div class="post-metadata">

**Author:** ![ISEMAREN\_AAG](https://avatars.discourse-cdn.com/v4/letter/i/82dd89/32.png) [@ISEMAREN\_AAG](https://forum.inductiveautomation.com/u/ISEMAREN_AAG)\
**Post date:** [August 3, 2022, 1:23pm UTC](https://forum.inductiveautomation.com/t/it-is-not-possible-to-reference-a-tag-in-alarm-label-for-a-udt/62619/4 "2022-08-03T13:23:20Z")

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@nminchin There’s no need. It’s a tag, not an expression. Notice that “DisplayPath” works correctly.

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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 3, 2022, 1:30pm UTC](https://forum.inductiveautomation.com/t/it-is-not-possible-to-reference-a-tag-in-alarm-label-for-a-udt/62619/5 "2022-08-03T13:30:31Z")

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I just tested with `[System]Gateway/SystemName` and label will remain null until the alarm is first triggered. Tested on 8.1.19.

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<div class="post-metadata">

**Author:** ![ISEMAREN\_AAG](https://avatars.discourse-cdn.com/v4/letter/i/82dd89/32.png) [@ISEMAREN\_AAG](https://forum.inductiveautomation.com/u/ISEMAREN_AAG)\
**Post date:** [August 3, 2022, 1:32pm UTC](https://forum.inductiveautomation.com/t/it-is-not-possible-to-reference-a-tag-in-alarm-label-for-a-udt/62619/6 "2022-08-03T13:32:49Z")

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Exact. It’s strange because DisplayPath does show value from the beginning.