# Elastic Watcher custom alert help

**URL:** <https://discuss.elastic.co/t/elastic-watcher-custom-alert-help/254125>\
**Category:** Elastic Observability\
**Tags:** docker, painless\
**Created:** [November 3, 2020, 9:50am UTC](https://discuss.elastic.co/t/elastic-watcher-custom-alert-help/254125 "2020-11-03T09:50:33Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![sumitmadhale](https://avatars.discourse-cdn.com/v4/letter/s/c77e96/32.png) [@sumitmadhale](https://discuss.elastic.co/u/sumitmadhale)\
**Post date:** [November 3, 2020, 9:50am UTC](https://discuss.elastic.co/t/elastic-watcher-custom-alert-help/254125/1 "2020-11-03T09:50:33Z")

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Hi,  
We are using elastic cloud Watcher for custom alerting, what I wanted to achieve is to search a field "docker.image" for all the docker containers and check if it is changed since one minute, if it has changed take a action and send a slack notification with new docker.image field value. I have gone through Watcher documentation and getting started guides but I could not find a necessary information about setting a condition on each field that is returned as part of search. Can someone guide me if its possible with Watcher?

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**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\
**Post date:** [November 4, 2022, 8:16am UTC](https://discuss.elastic.co/t/elastic-watcher-custom-alert-help/254125/2 "2022-11-04T08:16:51Z")

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