# Painless lang

**URL:** <https://discuss.elastic.co/t/painless-lang/113475>\
**Category:** Elasticsearch\
**Created:** [December 28, 2017, 4:16pm UTC](https://discuss.elastic.co/t/painless-lang/113475 "2017-12-28T16:16:47Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![radi](https://avatars.discourse-cdn.com/v4/letter/r/4491bb/32.png) [@radi](https://discuss.elastic.co/u/radi)\
**Post date:** [December 28, 2017, 4:16pm UTC](https://discuss.elastic.co/t/painless-lang/113475/1 "2017-12-28T16:16:47Z")

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hello,  
i want help to correct this script on lang:painless please

if (doc['filed].value!= null) {  
forEach(function(result){  
def users = result.doc['filed].value;  
def arr = [];  
for(def user in users){  
arr.push(user);  
}  
retunr arr.length;  
}  
}

thank's

---

<div class="post-metadata">

**Author:** ![jpountz](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/jpountz/32/45836_2.png) [@jpountz](https://discuss.elastic.co/u/jpountz)\
**Post date:** [December 28, 2017, 6:18pm UTC](https://discuss.elastic.co/t/painless-lang/113475/2 "2017-12-28T18:18:08Z")

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Please explain what the problem is so that we can help you. You will probably want to check out the painless docs: [https://www.elastic.co/guide/en/elasticsearch/reference/6.x/modules-scripting-painless.html](https://www.elastic.co/guide/en/elasticsearch/reference/6.x/modules-scripting-painless.html).

---

<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 25, 2018, 6:18pm UTC](https://discuss.elastic.co/t/painless-lang/113475/3 "2018-01-25T18:18:12Z")

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