# \[FEATURE\] Add expression function to check if tag is valid (exists and not disabled) **URL:** \ **Category:** Ignition\ **Created:** [June 25, 2022, 1:07am UTC](https://forum.inductiveautomation.com/t/feature-add-expression-function-to-check-if-tag-is-valid-exists-and-not-disabled/61192 "2022-06-25T01:07:00Z")\ **Posts on this page:** 1\ **Showing post:** 6
**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:** [August 21, 2023, 3:03am UTC](https://forum.inductiveautomation.com/t/feature-add-expression-function-to-check-if-tag-is-valid-exists-and-not-disabled/61192/6 "2023-08-21T03:03:44Z")
For posterity, this was added into Paul's Ignition Extensions module: > [@Ignition Extensions - Convenience utilities for advanced users](https://forum.inductiveautomation.com/t/ignition-extensions-convenience-utilities-for-advanced-users/64615): > > Introducing a hopefully community-engaged effort to build a useful repository of scripting and other Ignition utilities for everyone to benefit from. Download the latest release from the [Releases](https://github.com/IgnitionModuleDevelopmentCommunity/ignition-extensions/releases) page and take advantage of the following functions: Scripting Functions system.util system.util.getContext(): Context A convenience function to retrieve the local "context" object, useful as an entrypoint to other advanced scripting. system.util.deepCopy(object): Object Converts a given Pyth… It would still be nice for this to be added into the product, since this will be unusable in Edge projects ☹ --- _[View the full topic](https://forum.inductiveautomation.com/t/feature-add-expression-function-to-check-if-tag-is-valid-exists-and-not-disabled/61192)._