# Ignition no tag value changed event

**URL:** <https://forum.inductiveautomation.com/t/ignition-no-tag-value-changed-event/17567>\
**Category:** Module Development\
**Tags:** ignition79\
**Created:** [March 31, 2018, 11:34pm UTC](https://forum.inductiveautomation.com/t/ignition-no-tag-value-changed-event/17567 "2018-03-31T23:34:26Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![david.fan](https://avatars.discourse-cdn.com/v4/letter/d/9dc877/32.png) [@david.fan](https://forum.inductiveautomation.com/u/david.fan)\
**Post date:** [March 31, 2018, 11:34pm UTC](https://forum.inductiveautomation.com/t/ignition-no-tag-value-changed-event/17567/1 "2018-03-31T23:34:26Z")

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Hi ,

I wrote code to change some tag values periodically via ignition SDK API, I also put value changed event to insert record to database. But strangely, sometimes, it runs perfect. occasionally, value changed events are never triggered. From the log, I can confirm my script indeed wrote all the tags. However when I open the script editor and click save again (needn’t modify anything). The event can be triggered after then. Is it a ignition bug or something?