# Updating bound tag properties on a UDT

**URL:** <https://forum.inductiveautomation.com/t/updating-bound-tag-properties-on-a-udt/94655>\
**Category:** Ignition\
**Tags:** vision, ignition81\
**Created:** [August 14, 2024, 2:50pm UTC](https://forum.inductiveautomation.com/t/updating-bound-tag-properties-on-a-udt/94655 "2024-08-14T14:50:20Z")\
**Posts on this page:** 7\
**Page:** 1

<div class="post-metadata">

**Author:** ![L\_F](https://avatars.discourse-cdn.com/v4/letter/l/5f8ce5/32.png) [@L\_F](https://forum.inductiveautomation.com/u/L_F)\
**Post date:** [August 14, 2024, 2:50pm UTC](https://forum.inductiveautomation.com/t/updating-bound-tag-properties-on-a-udt/94655/1 "2024-08-14T14:50:20Z")

</div>

I have a UDT with 2 alarms configured on one of the UDT's tags. The alarm properties are bound to parameters of the UDT, see below.

 ![image](https://us1.discourse-cdn.com/inductiveautomation/original/3X/8/a/8a1d774c79bd4509a9c5f2e2ab8438141fdcbdb0.png)

I'm able to update the parameters, but the bindings do not apply the changes. Do I need to overide the alarms of the UDT tag?

---

<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 14, 2024, 4:19pm UTC](https://forum.inductiveautomation.com/t/updating-bound-tag-properties-on-a-udt/94655/2 "2024-08-14T16:19:00Z")

</div>

Bindings in alarms update when an alarm event occurs. Not all the time.

---

<div class="post-metadata">

**Author:** ![L\_F](https://avatars.discourse-cdn.com/v4/letter/l/5f8ce5/32.png) [@L\_F](https://forum.inductiveautomation.com/u/L_F)\
**Post date:** [August 14, 2024, 4:50pm UTC](https://forum.inductiveautomation.com/t/updating-bound-tag-properties-on-a-udt/94655/3 "2024-08-14T16:50:56Z")

</div>

So if a change is made to the binding values, do the bindings update when the new alarm conditions are met or when the old alarm conditions are met?

---

<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 14, 2024, 4:52pm UTC](https://forum.inductiveautomation.com/t/updating-bound-tag-properties-on-a-udt/94655/4 "2024-08-14T16:52:20Z")

</div>

Hmm. Probably the old ones. If you are trying to make variable conditions via bindings, it won't work, IIRC.

---

<div class="post-metadata">

**Author:** ![L\_F](https://avatars.discourse-cdn.com/v4/letter/l/5f8ce5/32.png) [@L\_F](https://forum.inductiveautomation.com/u/L_F)\
**Post date:** [August 14, 2024, 4:59pm UTC](https://forum.inductiveautomation.com/t/updating-bound-tag-properties-on-a-udt/94655/5 "2024-08-14T16:59:12Z")

</div>

Should I take that to mean there's no robust way of updating alarm conditions outside of the tag editor?

---

<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 14, 2024, 5:06pm UTC](https://forum.inductiveautomation.com/t/updating-bound-tag-properties-on-a-udt/94655/6 "2024-08-14T17:06:40Z")

</div>

The typical technique is to use expression tags in event driven mode to perform the desired binding, with a valueChange event script to write its result to the appropriate alarm properties.

---

<div class="post-metadata">

**Author:** ![L\_F](https://avatars.discourse-cdn.com/v4/letter/l/5f8ce5/32.png) [@L\_F](https://forum.inductiveautomation.com/u/L_F)\
**Post date:** [August 14, 2024, 5:08pm UTC](https://forum.inductiveautomation.com/t/updating-bound-tag-properties-on-a-udt/94655/7 "2024-08-14T17:08:41Z")

</div>

Thanks, I'll give it a try.