# \[BUG or not..\] 8.1.0 Adding parameters to parent UDTs doesn't not add them into UDTs based on them

**URL:** <https://forum.inductiveautomation.com/t/bug-or-not-8-1-0-adding-parameters-to-parent-udts-doesnt-not-add-them-into-udts-based-on-them/42107>\
**Category:** Ignition\
**Created:** [January 11, 2021, 7:27am UTC](https://forum.inductiveautomation.com/t/bug-or-not-8-1-0-adding-parameters-to-parent-udts-doesnt-not-add-them-into-udts-based-on-them/42107 "2021-01-11T07:27:27Z")\
**Posts on this page:** 1\
**Page:** 1

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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:** [January 11, 2021, 7:27am UTC](https://forum.inductiveautomation.com/t/bug-or-not-8-1-0-adding-parameters-to-parent-udts-doesnt-not-add-them-into-udts-based-on-them/42107/1 "2021-01-11T07:27:27Z")

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When you have a UDT that is based on another UDT (uses a UDT as its parent), and you add UDT parameters into the parent UDT, they’re not added into the child UDT.

Edit: maybe I jumped the gun… they just showed up now 🤔