# Where does the expression runscript run for Designer Authentication Strategy:Identity Provider for client?

**URL:** <https://forum.inductiveautomation.com/t/where-does-the-expression-runscript-run-for-designer-authentication-strategy-identity-provider-for-client/115045>\
**Category:** Ignition\
**Tags:** ignition83, scripting\
**Created:** [April 13, 2026, 4:06pm UTC](https://forum.inductiveautomation.com/t/where-does-the-expression-runscript-run-for-designer-authentication-strategy-identity-provider-for-client/115045 "2026-04-13T16:06:14Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![TimeLordship](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/timelordship/32/50264_2.png) [@TimeLordship](https://forum.inductiveautomation.com/u/TimeLordship)\
**Post date:** [April 13, 2026, 4:06pm UTC](https://forum.inductiveautomation.com/t/where-does-the-expression-runscript-run-for-designer-authentication-strategy-identity-provider-for-client/115045/1 "2026-04-13T16:06:14Z")

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When using the Designer Authentication Strategy:Identity Provider, Under User Mapped Attributes\>Roles, I have chosen Expression, and added a runscript.

My question is: where does this runscript run when I login via the Designer Launcher? Is it serverside, or somehow on the client’s OS?

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**Author:** ![paul-griffith](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/paul-griffith/32/37249_2.png) [@paul-griffith](https://forum.inductiveautomation.com/u/paul-griffith)\
**Post date:** [April 13, 2026, 4:14pm UTC](https://forum.inductiveautomation.com/t/where-does-the-expression-runscript-run-for-designer-authentication-strategy-identity-provider-for-client/115045/2 "2026-04-13T16:14:39Z")

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All IdP related scripts/expressions are happening on the gateway.

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<div class="post-metadata">

**Author:** ![TimeLordship](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/timelordship/32/50264_2.png) [@TimeLordship](https://forum.inductiveautomation.com/u/TimeLordship)\
**Post date:** [April 13, 2026, 4:20pm UTC](https://forum.inductiveautomation.com/t/where-does-the-expression-runscript-run-for-designer-authentication-strategy-identity-provider-for-client/115045/3 "2026-04-13T16:20:54Z")

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Great, thanks for the quick info!