# Can a tag on change script trample itself?

**URL:** <https://forum.inductiveautomation.com/t/can-a-tag-on-change-script-trample-itself/91775>\
**Category:** Ignition\
**Tags:** ignition81\
**Created:** [June 12, 2024, 7:29pm UTC](https://forum.inductiveautomation.com/t/can-a-tag-on-change-script-trample-itself/91775 "2024-06-12T19:29:43Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![Zach\_Larson](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/zach_larson/32/54388_2.png) [@Zach\_Larson](https://forum.inductiveautomation.com/u/Zach_Larson)\
**Post date:** [June 12, 2024, 7:29pm UTC](https://forum.inductiveautomation.com/t/can-a-tag-on-change-script-trample-itself/91775/1 "2024-06-12T19:29:43Z")

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If a tag change script does a read and then a write, is it possible for the next change to read a value before the write?  
What do you do to prevent that, use a timer?