# Create event on change of field

**URL:** https://discuss.elastic.co/t/create-event-on-change-of-field/275363
**Category:** Logstash
**Created:** [June 9, 2021, 3:16am UTC](https://discuss.elastic.co/t/create-event-on-change-of-field/275363 "2021-06-09T03:16:27Z")
**Posts on this page:** 1
**Showing post:** 2

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### Author: ![Badger](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/badger/32/25190_2.png) [@Badger](https://discuss.elastic.co/u/Badger)
#### Post date: [June 9, 2021, 3:31am UTC](https://discuss.elastic.co/t/create-event-on-change-of-field/275363/2 "2021-06-09T03:31:42Z")

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> [@johnwood](#):
>
> Can someone point me in the right direction please?

Take a look at the second configuration in [this](https://discuss.elastic.co/t/logstash-grok-to-match-only-first-occurrence-and-stop-parsing-repeatedly-for-same-values/274201/3) post.

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