# UDT nesting-create 'data type instance' is unselectable

**URL:** <https://forum.inductiveautomation.com/t/udt-nesting-create-data-type-instance-is-unselectable/23655>\
**Category:** Ignition\
**Tags:** ignition79\
**Created:** [March 27, 2019, 5:02pm UTC](https://forum.inductiveautomation.com/t/udt-nesting-create-data-type-instance-is-unselectable/23655 "2019-03-27T17:02:13Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![chasondeshotel](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/chasondeshotel/32/20032_2.png) [@chasondeshotel](https://forum.inductiveautomation.com/u/chasondeshotel)\
**Post date:** [March 27, 2019, 5:02pm UTC](https://forum.inductiveautomation.com/t/udt-nesting-create-data-type-instance-is-unselectable/23655/1 "2019-03-27T17:02:13Z")

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Hello,

I’m following the guide here -\> [https://docs.inductiveautomation.com/display/DOC79/UDT+Composition](https://docs.inductiveautomation.com/display/DOC79/UDT+Composition)

but when I make a new UDT instance, then press the green arrow to create a nested UDT instance, I cannot select the ‘data type instance’ option. I can create folders and all other types of tags inside my UDT, just not UDTs.

Has anyone else ran into this issue?

Thanks

edit: This is a bug in 7.9.4. Coworker submitted a ticket on it a while back, supposedly fixed but unfortunately you don’t get the fixes if you don’t update .\_.