# Creating a dynamic scripted field
**URL:** https://discuss.elastic.co/t/creating-a-dynamic-scripted-field/58108
**Category:** Elasticsearch
**Created:** [August 16, 2016, 7:43am UTC](https://discuss.elastic.co/t/creating-a-dynamic-scripted-field/58108 "2016-08-16T07:43:55Z")
**Posts on this page:** 2
**Page:** 1
### Author:  [@gilisade](https://discuss.elastic.co/u/gilisade)
#### Post date: [August 16, 2016, 7:43am UTC](https://discuss.elastic.co/t/creating-a-dynamic-scripted-field/58108/1 "2016-08-16T07:43:55Z")
hi there
i'm trying to get the latest value of a certain field into a scripted field
what i did is this
GET INDEX\_NAME/\_search
{
"query": {"term": {
"type": {
"value": "certain\_type"
}
}
} ,
"fields": ["@timestamp" , "sum\_users"],
"size": 1 ,
"sort": [
{
"@timestamp": {
"order": "desc"
}
}
] ,
"script\_fields": {
"last\_value": {
"script": "doc['sum\_users'].value"
}
}
}
what i got here is the latest value of the field "sum\_users" filtered by a certain type into a scripted field called "latest vlaue"
now i want this to become a single dynamic field that means that i want tihs script to run every few min or so , that the value of "latest value" will change acordingly - even making it like a unique document that changes over time acordingly
can anyone help me on that , how to create that scripted "document" in a certain index
thank you!
---
### Author:  [@system](https://discuss.elastic.co/u/system)
#### Post date: [July 5, 2017, 10:27pm UTC](https://discuss.elastic.co/t/creating-a-dynamic-scripted-field/58108/2 "2017-07-05T22:27:35Z")