# Check filed value

**URL:** <https://discuss.elastic.co/t/check-filed-value/274976>\
**Category:** Logstash\
**Created:** [June 4, 2021, 11:18am UTC](https://discuss.elastic.co/t/check-filed-value/274976 "2021-06-04T11:18:15Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![royalE](https://avatars.discourse-cdn.com/v4/letter/r/5fc32e/32.png) [@royalE](https://discuss.elastic.co/u/royalE)\
**Post date:** [June 4, 2021, 11:18am UTC](https://discuss.elastic.co/t/check-filed-value/274976/1 "2021-06-04T11:18:15Z")

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I want to check the value of the field if its contain a number or string how can i do that ?

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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:** [July 2, 2021, 11:18am UTC](https://discuss.elastic.co/t/check-filed-value/274976/2 "2021-07-02T11:18:45Z")

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