# Writing rules in KQL from a created index pattern **URL:** \ **Category:** Elastic Security\ **Created:** [August 20, 2022, 11:37am UTC](https://discuss.elastic.co/t/writing-rules-in-kql-from-a-created-index-pattern/312517 "2022-08-20T11:37:43Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![Didi\_Lilou](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/didi_lilou/32/99836_2.png) [@Didi\_Lilou](https://discuss.elastic.co/u/Didi_Lilou)\ **Post date:** [August 20, 2022, 11:37am UTC](https://discuss.elastic.co/t/writing-rules-in-kql-from-a-created-index-pattern/312517/1 "2022-08-20T11:37:43Z")
#elastic-stack:logstash. Hello. I created an index pattern coming from snort in json format. I used logstash to create it But now i would like to write rules (xpack is activated) in kql coming from my snort index pattern i created but it does not work. Please help. I used this tutorial : [Visualize Snort3 logs in Kibana using Logstash and Elasticsearch – AGHANIM BLOG](https://blog.aghanim.net/?p=427#Configuring_Logstash) ---
**Author:** ![Pedro\_Jaramillo](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/pedro_jaramillo/32/45904_2.png) [@Pedro\_Jaramillo](https://discuss.elastic.co/u/Pedro_Jaramillo)\ **Post date:** [September 7, 2022, 7:35pm UTC](https://discuss.elastic.co/t/writing-rules-in-kql-from-a-created-index-pattern/312517/2 "2022-09-07T19:35:24Z")
Hi @Didi_Lilou, are you encountering errors when creating your Custom Query (KQL) rule? Would you mind sharing more information about what you're seeing? ---
**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\ **Post date:** [October 5, 2022, 7:35pm UTC](https://discuss.elastic.co/t/writing-rules-in-kql-from-a-created-index-pattern/312517/3 "2022-10-05T19:35:32Z")
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