# Help with conversion
**URL:** https://discuss.elastic.co/t/help-with-conversion/256403
**Category:** Logstash
**Created:** [November 23, 2020, 8:37pm UTC](https://discuss.elastic.co/t/help-with-conversion/256403 "2020-11-23T20:37:16Z")
**Posts on this page:** 4
**Page:** 1
### Author:  [@Marcin\_Kr](https://discuss.elastic.co/u/Marcin_Kr)
#### Post date: [November 23, 2020, 8:37pm UTC](https://discuss.elastic.co/t/help-with-conversion/256403/1 "2020-11-23T20:37:16Z")
Hi guys,
I've created logstash file with csv filter like below. It's working but i need to export timestamp field as "date" into elastic. I decided to use convert function but it's not working. Can You help ?
'''
input {
file {
path =\> "/home/elastic/ECHOVOULT/AEDS-TWAMP-\*.csv"
start\_position =\> "beginning"
sincedb\_path =\> "/dev/null"
}
}
filter {
csv {
separator =\> ","
skip\_header =\> true
autodetect\_column\_names =\> true
autogenerate\_column\_names =\> true
skip\_empty\_columns =\> true
}
grok {
patterns\_dir =\> ["/home/elastic/ECHOVOULT/pattern"]
match =\> { "destination\_name" =\> "%{REGION\_ID:region\_id}_%{NAZWA:sitename\_a}%{LITERKA:kandydat}_%{ENODEB\_ID:enodeb\_id}%{REST:czesc\_adresu}%{PHB:phb}"}
```
}
```
mutate {convert =\> {"timestamp"=\> "date" }}
}
output {
elasticsearch {
hosts =\> "[http://172.16.63.27:9200](http://172.16.63.27:9200)"
index =\> "trm\_echo\_test"
}
stdout { codec =\> rubydebug }
}
'''
---
### Author:  [@Badger](https://discuss.elastic.co/u/Badger)
#### Post date: [November 23, 2020, 9:47pm UTC](https://discuss.elastic.co/t/help-with-conversion/256403/2 "2020-11-23T21:47:45Z")
mutate+convert cannot do that. Use a [date](https://www.elastic.co/guide/en/logstash/current/plugins-filters-date.html) filter.
---
### Author:  [@Marcin\_Kr](https://discuss.elastic.co/u/Marcin_Kr)
#### Post date: [November 24, 2020, 7:09am UTC](https://discuss.elastic.co/t/help-with-conversion/256403/3 "2020-11-24T07:09:21Z")
Yes, you right. Thank you. It's working perfectly.
---
### Author:  [@system](https://discuss.elastic.co/u/system)
#### Post date: [December 22, 2020, 7:09am UTC](https://discuss.elastic.co/t/help-with-conversion/256403/4 "2020-12-22T07:09:39Z")
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