# Multiline Codec Pattern Match if String Exists **URL:** \ **Category:** Beats\ **Tags:** filebeat\ **Created:** [September 28, 2020, 3:46pm UTC](https://discuss.elastic.co/t/multiline-codec-pattern-match-if-string-exists/250225 "2020-09-28T15:46:33Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![NomadicCodeGuy](https://avatars.discourse-cdn.com/v4/letter/n/7cd45c/32.png) [@NomadicCodeGuy](https://discuss.elastic.co/u/NomadicCodeGuy)\ **Post date:** [September 28, 2020, 3:46pm UTC](https://discuss.elastic.co/t/multiline-codec-pattern-match-if-string-exists/250225/1 "2020-09-28T15:46:34Z")
Is it possible to configure the multiline codec to match a pattern if a message contains a certain string? If yes, what would this pattern look like? For example, if a message contains the string "Finished scenario" I would like to append it to the message that came before it. ---
**Author:** ![Mario\_Castro](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/mario_castro/32/35107_2.png) [@Mario\_Castro](https://discuss.elastic.co/u/Mario_Castro)\ **Post date:** [September 29, 2020, 4:49pm UTC](https://discuss.elastic.co/t/multiline-codec-pattern-match-if-string-exists/250225/2 "2020-09-29T16:49:23Z")
Hi @NomadicCodeGuy 🙂 Take a look at this [https://www.elastic.co/guide/en/beats/filebeat/current/multiline-examples.html](https://www.elastic.co/guide/en/beats/filebeat/current/multiline-examples.html) ---
**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\ **Post date:** [October 27, 2020, 6:49pm UTC](https://discuss.elastic.co/t/multiline-codec-pattern-match-if-string-exists/250225/3 "2020-10-27T18:49:37Z")
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