# Ignition Extensions - Convenience utilities for advanced users

**URL:** <https://forum.inductiveautomation.com/t/ignition-extensions-convenience-utilities-for-advanced-users/64615>\
**Category:** 3rd Party Modules\
**Created:** [September 28, 2022, 6:41pm UTC](https://forum.inductiveautomation.com/t/ignition-extensions-convenience-utilities-for-advanced-users/64615 "2022-09-28T18:41:11Z")\
**Posts on this page:** 1\
**Showing post:** 25

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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:** [October 18, 2022, 2:20am UTC](https://forum.inductiveautomation.com/t/ignition-extensions-convenience-utilities-for-advanced-users/64615/25 "2022-10-18T02:20:42Z")

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> [@\[FEATURE\] Add expression function to check if tag is valid (exists and not disabled)](https://forum.inductiveautomation.com/t/feature-add-expression-function-to-check-if-tag-is-valid-exists-and-not-disabled/61192):
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> I should have asked for this a very long time ago to be honest… I would like a function to check if a tag is valid. What I mean by this, is that it both exists and is not disabled. No other qualities should affect the value returned. Often I will create templates / view templates that can accommodate multiple UDT definitions and/or instance configurations. E.g. differences in the tags available between similar UDT defs or tags that are disabled in particular instances of the UDTs. To accommoda…

Can you pleeease add this one 🙂 This would make my life vastly better (and get rid of a large number of horrible looking expressions)

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