# How to use scripted fields, very basics
**URL:** https://discuss.elastic.co/t/how-to-use-scripted-fields-very-basics/100528
**Category:** Kibana
**Created:** [September 14, 2017, 12:03pm UTC](https://discuss.elastic.co/t/how-to-use-scripted-fields-very-basics/100528 "2017-09-14T12:03:31Z")
**Posts on this page:** 3
**Page:** 1
### Author:  [@tomer](https://discuss.elastic.co/u/tomer)
#### Post date: [September 14, 2017, 12:03pm UTC](https://discuss.elastic.co/t/how-to-use-scripted-fields-very-basics/100528/1 "2017-09-14T12:03:32Z")
Hi,
I am trying to understand how to use scripted fields (the basics of it), using date field and I am unsuccessful.
I saw a lot of 'painless' code in the format as inside [this](https://www.elastic.co/guide/en/elasticsearch/reference/current/search-request-script-fields.html) link, but they are all in PUT GET format and I don't know what to put inside the box of script in the Kibana what format belongs there:
my end result is to subtract date X by date Y.
---
### Author:  [@tomer](https://discuss.elastic.co/u/tomer)
#### Post date: [September 14, 2017, 1:00pm UTC](https://discuss.elastic.co/t/how-to-use-scripted-fields-very-basics/100528/2 "2017-09-14T13:00:19Z")
Found this and it works:
```
def dateFormat = new SimpleDateFormat("ss");
return dateFormat.format(doc['medGotAck_MT.raw'].value - doc['MedGotMsgFromApi.raw'].value);
```
---
### Author:  [@system](https://discuss.elastic.co/u/system)
#### Post date: [October 12, 2017, 1:00pm UTC](https://discuss.elastic.co/t/how-to-use-scripted-fields-very-basics/100528/3 "2017-10-12T13:00:44Z")
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