# Tag changed event if not utilized in a window **URL:** \ **Category:** Ignition\ **Tags:** vision\ **Created:** [October 19, 2023, 9:24pm UTC](https://forum.inductiveautomation.com/t/tag-changed-event-if-not-utilized-in-a-window/80729 "2023-10-19T21:24:49Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![Alfredo\_Egmo](https://avatars.discourse-cdn.com/v4/letter/a/ccd318/32.png) [@Alfredo\_Egmo](https://forum.inductiveautomation.com/u/Alfredo_Egmo)\ **Post date:** [October 19, 2023, 9:24pm UTC](https://forum.inductiveautomation.com/t/tag-changed-event-if-not-utilized-in-a-window/80729/1 "2023-10-19T21:24:49Z")
Question Just to be sure: Any PLC tag that I setup in the TagBrowser as (1) in the image below will trigger the **ValueChanged** scripting Event (2) in case of change of value in the PLC even if I don't use that tag in any window of the ignition project? ![image](https://us1.discourse-cdn.com/inductiveautomation/original/3X/1/6/16cc47bb84b371f5dbe38bc3eb1a55a65bba3f3d.png) ---
**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:** [October 19, 2023, 10:22pm UTC](https://forum.inductiveautomation.com/t/tag-changed-event-if-not-utilized-in-a-window/80729/2 "2023-10-19T22:22:40Z")
Yes. Same would be true of gateway tag change events (in the project). Neither of these rely on any UI activity. Do be careful--both of these run in the gateway, not in any UI, so they cannot work with windows or UI components or Vision Client tags. ---
**Author:** ![Alfredo\_Egmo](https://avatars.discourse-cdn.com/v4/letter/a/ccd318/32.png) [@Alfredo\_Egmo](https://forum.inductiveautomation.com/u/Alfredo_Egmo)\ **Post date:** [October 20, 2023, 1:41pm UTC](https://forum.inductiveautomation.com/t/tag-changed-event-if-not-utilized-in-a-window/80729/3 "2023-10-20T13:41:58Z")
Thank you Sr.