# Calling project library function in an expression

**URL:** <https://forum.inductiveautomation.com/t/calling-project-library-function-in-an-expression/60292>\
**Category:** Ignition\
**Tags:** ignition81\
**Created:** [June 2, 2022, 12:37pm UTC](https://forum.inductiveautomation.com/t/calling-project-library-function-in-an-expression/60292 "2022-06-02T12:37:00Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![Dustin\_VanKeuren](https://avatars.discourse-cdn.com/v4/letter/d/b782af/32.png) [@Dustin\_VanKeuren](https://forum.inductiveautomation.com/u/Dustin_VanKeuren)\
**Post date:** [June 2, 2022, 12:37pm UTC](https://forum.inductiveautomation.com/t/calling-project-library-function-in-an-expression/60292/1 "2022-06-02T12:37:00Z")

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I looked through the documentation to see if it is possible to call project library functions in an expression. I did not find what I was looking for. Is this possible?

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**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:** [June 2, 2022, 12:45pm UTC](https://forum.inductiveautomation.com/t/calling-project-library-function-in-an-expression/60292/2 "2022-06-02T12:45:08Z")

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The runScript function should be what you’re looking for.

[https://docs.inductiveautomation.com/display/DOC81/runScript](https://docs.inductiveautomation.com/display/DOC81/runScript)

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<div class="post-metadata">

**Author:** ![Dustin\_VanKeuren](https://avatars.discourse-cdn.com/v4/letter/d/b782af/32.png) [@Dustin\_VanKeuren](https://forum.inductiveautomation.com/u/Dustin_VanKeuren)\
**Post date:** [June 2, 2022, 12:46pm UTC](https://forum.inductiveautomation.com/t/calling-project-library-function-in-an-expression/60292/3 "2022-06-02T12:46:37Z")

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Thank you!