# Elasticsearch script to modify value inside array
**URL:** https://discuss.elastic.co/t/elasticsearch-script-to-modify-value-inside-array/45568
**Category:** Elasticsearch
**Created:** [March 28, 2016, 8:37am UTC](https://discuss.elastic.co/t/elasticsearch-script-to-modify-value-inside-array/45568 "2016-03-28T08:37:44Z")
**Posts on this page:** 2
**Page:** 1
### Author:  [@gpong](https://discuss.elastic.co/u/gpong)
#### Post date: [March 28, 2016, 8:37am UTC](https://discuss.elastic.co/t/elasticsearch-script-to-modify-value-inside-array/45568/1 "2016-03-28T08:37:44Z")
Hi guys,
I am new on elasticsearch script. On my source, I have dn\_list which is json array. and I tried to manipulated the value using script. here is what I want , when user add the dn\_list data I need to subtract dn\_qty (on dn\_no is N/A array) with new dn\_qty. here is my source :
`{ "sto_no":"3000000168", "line":"10", "shipway":"SF", "hub_location":"F600-HHN1", "delivery_date":"2016-03-10", "order_qty":"2000", "dn_list":[{ "dn_no":"N/A", "dn_shipway":"N/A", "dn_status":"N/A", "dn_qty":"100" }] }`
so for example when user insert this record
{
"dn\_no":"87001236",
"dn\_shipway":"SF",
"dn\_delivery\_date":"2016-03-16",
"dn\_status":"DN Released",
"dn\_qty":"30"
}
the result will be
`{ "sto_no":"3000000168", "line":"10", "shipway":"SF", "hub_location":"F600-HHN1", "delivery_date":"2016-03-10", "order_qty":"2000", "dn_list":[{ "dn_no":"N/A", "dn_shipway":"N/A", "dn_status":"N/A", "dn_qty":"70" ---> from 100-30=70 }, { "dn_no":"87001236", "dn_shipway":"SF", "dn_delivery_date":"2016-03-16", "dn_status":"DN Released", "dn_qty":"30" }] }`
is it possible to do this using script??
Thanks a lot
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### Author:  [@system](https://discuss.elastic.co/u/system)
#### Post date: [July 5, 2017, 11:04pm UTC](https://discuss.elastic.co/t/elasticsearch-script-to-modify-value-inside-array/45568/2 "2017-07-05T23:04:46Z")