# Edit UDT **URL:** \ **Category:** Ignition\ **Created:** [January 25, 2016, 7:05pm UTC](https://forum.inductiveautomation.com/t/edit-udt/11111 "2016-01-25T19:05:07Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![denji26](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/denji26/32/5805_2.png) [@denji26](https://forum.inductiveautomation.com/u/denji26)\ **Post date:** [January 25, 2016, 7:05pm UTC](https://forum.inductiveautomation.com/t/edit-udt/11111/1 "2016-01-25T19:05:07Z")
I want to edit the alarm name of an alarm on a UDT, so it applies to all instances of that UDT. Is this possible? ---
**Author:** ![JordanCClark](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/jordancclark/32/83362_2.png) [@JordanCClark](https://forum.inductiveautomation.com/u/JordanCClark)\ **Post date:** [January 26, 2016, 1:21pm UTC](https://forum.inductiveautomation.com/t/edit-udt/11111/2 "2016-01-26T13:21:36Z")
Doesn’t it do that by default? As near as I can tell, all alarms defined in the UDT propagate down to the instances. If you define an alarm in an instance, it stays within that instance. ---
**Author:** ![denji26](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/denji26/32/5805_2.png) [@denji26](https://forum.inductiveautomation.com/u/denji26)\ **Post date:** [July 15, 2016, 6:12pm UTC](https://forum.inductiveautomation.com/t/edit-udt/11111/3 "2016-07-15T18:12:02Z")
Long time, forgot about this until I found myself needing to do something similar again 🙂 If I want to edit the UDT tag itself, I’m not sure how I would do that. I have a UDT at: Data Types/TestKymera/TestUDT In that UDT I have a tag called TestChild1. How would I edit the alarm properties of that tag? If I do a tagExists on “[s1500]_types_/TestKymera/TestUDT” it returns true, but “[s1500]_types_/TestKymera/TestUDT/TestChild1” returns false. I’m not sure how to access that member tag in the UDT to edit it.