# Tokenizing using runtime-fields

**URL:** <https://discuss.elastic.co/t/tokenizing-using-runtime-fields/319469>\
**Category:** Kibana\
**Tags:** runtime-fields\
**Created:** [November 21, 2022, 2:49pm UTC](https://discuss.elastic.co/t/tokenizing-using-runtime-fields/319469 "2022-11-21T14:49:26Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![rvadiga](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/rvadiga/32/102601_2.png) [@rvadiga](https://discuss.elastic.co/u/rvadiga)\
**Post date:** [November 21, 2022, 2:49pm UTC](https://discuss.elastic.co/t/tokenizing-using-runtime-fields/319469/1 "2022-11-21T14:49:26Z")

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Hello,

I have an ELK index created already with the data value ";\<status\_code\>@ip". I need to define an aggregation based on the status code. Can someone please share any hints to split this 'status\_code' from the ELK field using runtime-fields.

Thanks  
Venkatesh

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<div class="post-metadata">

**Author:** ![Marco\_Liberati](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/marco_liberati/32/82953_2.png) [@Marco\_Liberati](https://discuss.elastic.co/u/Marco_Liberati)\
**Post date:** [November 21, 2022, 3:20pm UTC](https://discuss.elastic.co/t/tokenizing-using-runtime-fields/319469/2 "2022-11-21T15:20:23Z")

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Hi @rvadiga

I assume your `field` has all strings that match that pattern `;<status_code>@<ip>`.  
If that's hold true, then you could write something like this in a runtime\_field:

```auto
def match = /^;(\d+)@.*$/.matcher(doc['my_field'].value);
if ( match.find() ) {
   emit(match.group(1));
}

```

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<div class="post-metadata">

**Author:** ![rvadiga](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/rvadiga/32/102601_2.png) [@rvadiga](https://discuss.elastic.co/u/rvadiga)\
**Post date:** [November 26, 2022, 2:16pm UTC](https://discuss.elastic.co/t/tokenizing-using-runtime-fields/319469/3 "2022-11-26T14:16:18Z")

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Thanks Marco. Your suggestions is a great help for my task.

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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:** [December 24, 2022, 1:34pm UTC](https://discuss.elastic.co/t/tokenizing-using-runtime-fields/319469/4 "2022-12-24T13:34:01Z")

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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 21, 2023, 1:34pm UTC](https://discuss.elastic.co/t/tokenizing-using-runtime-fields/319469/5 "2023-01-21T13:34:57Z")

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