# BUG: Custom property's change script not triggering and enabled set to null

**URL:** <https://forum.inductiveautomation.com/t/bug-custom-propertys-change-script-not-triggering-and-enabled-set-to-null/108399>\
**Category:** Ignition\
**Tags:** perspective\
**Created:** [July 11, 2025, 8:50pm UTC](https://forum.inductiveautomation.com/t/bug-custom-propertys-change-script-not-triggering-and-enabled-set-to-null/108399 "2025-07-11T20:50:38Z")\
**Posts on this page:** 2\
**Page:** 1

<div class="post-metadata">

**Author:** ![jlapenna](https://avatars.discourse-cdn.com/v4/letter/j/a88e4f/32.png) [@jlapenna](https://forum.inductiveautomation.com/u/jlapenna)\
**Post date:** [July 11, 2025, 8:50pm UTC](https://forum.inductiveautomation.com/t/bug-custom-propertys-change-script-not-triggering-and-enabled-set-to-null/108399/1 "2025-07-11T20:50:38Z")

</div>

Ignition platform 8.1.48

**The Setup**  
I have a `session.custom.mySessionScopedVariable` variable with no bindings. On a main navigation view, there is a selection dropdown that is bi-directionally bound to this variable. When the dropdown changes, `session.custom.mySessionScopedVariable` changes. I have configured a change script on `session.custom.mySessionScopedVariable` to make session scoped changes on this main dropdown selection. I've also created view scoped custom variables bound to `session.custom.mySessionScopedVariable` with their own change scripts to make view scoped changes on dropdown selection.

**The Issue**  
The session scoped change script never runs, but the bound view scoped change scripts do. When I actually open up props.json and look at the configuration for the session scoped variable, the `onChange` key shows the script, however, `enabled` is set to null. I can uncheck the enabled checkbox in designer and the props.json `enabled` changes to `false`. When I check the checkbox and save, it goes back to `null`. I can manually change the props.json to `enabled: true` and the script still does not run. Then, on the very next save from designer, it goes back to `null`. What is going on? I've deleted the script and recreated it and it's the same issue.

Any help would be greatly appreciated.

---

<div class="post-metadata">

**Author:** ![pturmel](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/pturmel/32/3295_2.png) [@pturmel](https://forum.inductiveautomation.com/u/pturmel)\
**Post date:** [July 11, 2025, 8:58pm UTC](https://forum.inductiveautomation.com/t/bug-custom-propertys-change-script-not-triggering-and-enabled-set-to-null/108399/2 "2025-07-11T20:58:40Z")

</div>

Huh. Sounds like a bug. And easily reproduced. You should open a support ticket. (That's how bugs get fixed.)