# Error in script fields

**URL:** https://discuss.elastic.co/t/error-in-script-fields/237645
**Category:** Elasticsearch
**Created:** [June 18, 2020, 1:22pm UTC](https://discuss.elastic.co/t/error-in-script-fields/237645 "2020-06-18T13:22:57Z")
**Posts on this page:** 2
**Page:** 1

<div class="post-metadata">

### Author: ![hiba](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/hiba/32/110919_2.png) [@hiba](https://discuss.elastic.co/u/hiba)
#### Post date: [June 18, 2020, 1:22pm UTC](https://discuss.elastic.co/t/error-in-script-fields/237645/1 "2020-06-18T13:22:57Z")

</div>

Hi ,  
why i can't get the result of the script :

GET /test\_bookings\_v2/\_search?size=0  
{  
"script\_fields": {  
"avg\_price": {  
"script": {  
"lang": "expression",  
"source": "doc['price'].avg()"  
}  
}  
}

}

![Capture](https://us1.discourse-cdn.com/elastic/original/3X/3/4/344000f87f7bed8bb2c03245598e925914ddf0ae.png)

i use ELK :7.7.0  
any help please i want to use this field in my visualization.

---

<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: [July 16, 2020, 1:22pm UTC](https://discuss.elastic.co/t/error-in-script-fields/237645/2 "2020-07-16T13:22:57Z")

</div>

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