# Dissect json fields in a specific field

**URL:** <https://discuss.elastic.co/t/dissect-json-fields-in-a-specific-field/227301>\
**Category:** Logstash\
**Created:** [April 9, 2020, 11:03am UTC](https://discuss.elastic.co/t/dissect-json-fields-in-a-specific-field/227301 "2020-04-09T11:03:41Z")\
**Posts on this page:** 3\
**Page:** 1

<div class="post-metadata">

**Author:** ![oula\_oula](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/oula_oula/32/63182_2.png) [@oula\_oula](https://discuss.elastic.co/u/oula_oula)\
**Post date:** [April 9, 2020, 11:03am UTC](https://discuss.elastic.co/t/dissect-json-fields-in-a-specific-field/227301/1 "2020-04-09T11:03:41Z")

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Hi,

I would like to know if it is possible to use the json parser to add thes fields result in a chosen field  
instead of just in the "\_source" field.

for example:  
message = "{'step': 1, 'completed': true}"

```auto
filter{
   mutate: {
        add_field: "json_result" => { json :{ source => "message"}}
   }
}

```

??

---

<div class="post-metadata">

**Author:** ![oula\_oula](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/oula_oula/32/63182_2.png) [@oula\_oula](https://discuss.elastic.co/u/oula_oula)\
**Post date:** [April 9, 2020, 11:28am UTC](https://discuss.elastic.co/t/dissect-json-fields-in-a-specific-field/227301/2 "2020-04-09T11:28:59Z")

</div>

Solved it with the target tool of json filter plugin

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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:** [May 7, 2020, 11:29am UTC](https://discuss.elastic.co/t/dissect-json-fields-in-a-specific-field/227301/3 "2020-05-07T11:29:07Z")

</div>

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