# Multiple IF conditions - Logstash

**URL:** <https://discuss.elastic.co/t/multiple-if-conditions-logstash/166186>\
**Category:** Logstash\
**Created:** [January 29, 2019, 2:15pm UTC](https://discuss.elastic.co/t/multiple-if-conditions-logstash/166186 "2019-01-29T14:15:04Z")\
**Posts on this page:** 1\
**Showing post:** 12

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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:** [January 31, 2019, 5:07pm UTC](https://discuss.elastic.co/t/multiple-if-conditions-logstash/166186/12 "2019-01-31T17:07:26Z")

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I was just looking at [another](https://discuss.elastic.co/t/suddenly-unable-to-import-parsed-logs-from-logstash-into-elasticsearch/166439/2?u=badger) date format problem. I would suggest the same. What is the format of the timestamp on the documents already in the index. In a test environment create a new index and add one document with each format. Does changing which one is the first to be added make a difference?

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