# Trigger a CMMN Event Listener via REST API

**URL:** <https://forum.flowable.org/t/trigger-a-cmmn-event-listener-via-rest-api/7885>\
**Category:** Flowable Engine\
**Created:** [May 19, 2021, 1:15pm UTC](https://forum.flowable.org/t/trigger-a-cmmn-event-listener-via-rest-api/7885 "2021-05-19T13:15:35Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![Jprotz](https://avatars.discourse-cdn.com/v4/letter/j/f08c70/32.png) [@Jprotz](https://forum.flowable.org/u/Jprotz)\
**Post date:** [May 19, 2021, 1:15pm UTC](https://forum.flowable.org/t/trigger-a-cmmn-event-listener-via-rest-api/7885/1 "2021-05-19T13:15:35Z")

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Hello,

I’m trying to step through a case model via the API and have a user event listener I’m trying to trigger. I’ve looked through the swagger API and can’t find any API related to executions (which I’ve seen mentioned for the process model). I’m using Flowable 6.4.1.

Thanks in advance,  
James

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**Author:** ![joram](https://yyz1.discourse-cdn.com/flex035/user_avatar/forum.flowable.org/joram/32/26_2.png) [@joram](https://forum.flowable.org/u/joram)\
**Post date:** [May 20, 2021, 8:05am UTC](https://forum.flowable.org/t/trigger-a-cmmn-event-listener-via-rest-api/7885/2 "2021-05-20T08:05:09Z")

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Use the CmmnRuntimeService#createUserEventListenerInstanceQuery to query for the user event listener. You can complete it with CmmnRuntimeService#completeUserEventListenerInstance.

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**Author:** ![Jprotz](https://avatars.discourse-cdn.com/v4/letter/j/f08c70/32.png) [@Jprotz](https://forum.flowable.org/u/Jprotz)\
**Post date:** [May 20, 2021, 12:25pm UTC](https://forum.flowable.org/t/trigger-a-cmmn-event-listener-via-rest-api/7885/3 "2021-05-20T12:25:47Z")

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Thanks for your response! Is it possible to query for / complete an event listener via the REST API?

Thanks,  
James