# Timelion query detecting value change

**URL:** <https://discuss.elastic.co/t/timelion-query-detecting-value-change/259236>\
**Category:** Kibana\
**Tags:** timelion\
**Created:** [December 21, 2020, 9:49am UTC](https://discuss.elastic.co/t/timelion-query-detecting-value-change/259236 "2020-12-21T09:49:35Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![fran6ssl](https://avatars.discourse-cdn.com/v4/letter/f/ce7236/32.png) [@fran6ssl](https://discuss.elastic.co/u/fran6ssl)\
**Post date:** [December 21, 2020, 9:49am UTC](https://discuss.elastic.co/t/timelion-query-detecting-value-change/259236/1 "2020-12-21T09:49:35Z")

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Hi,

I am using Timelion with a time serie where I need to show occurences when a value changed from X to Y.  
E.g I have a boolean property and I want to write a timelion query that shows when the value changed from True to False  
Any idea how I can achieve that ?

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<div class="post-metadata">

**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\
**Post date:** [January 18, 2021, 9:49am UTC](https://discuss.elastic.co/t/timelion-query-detecting-value-change/259236/2 "2021-01-18T09:49:48Z")

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