# Single key (field) with multiple values to multiple key (fields) with single fields convertion
**URL:** https://discuss.elastic.co/t/single-key-field-with-multiple-values-to-multiple-key-fields-with-single-fields-convertion/204090
**Category:** Logstash
**Created:** [October 17, 2019, 3:25pm UTC](https://discuss.elastic.co/t/single-key-field-with-multiple-values-to-multiple-key-fields-with-single-fields-convertion/204090 "2019-10-17T15:25:03Z")
**Posts on this page:** 4
**Page:** 1
### Author:  [@Andres\_Man](https://discuss.elastic.co/u/Andres_Man)
#### Post date: [October 17, 2019, 3:25pm UTC](https://discuss.elastic.co/t/single-key-field-with-multiple-values-to-multiple-key-fields-with-single-fields-convertion/204090/1 "2019-10-17T15:25:03Z")
I need to split a log into multiple fields however the log has the same field name for multiple values and when I use the fiedl\_split option of kv it will put all the the fields with the same key in the same field. How can I put the values into separate fields with distinct names.
The desire output should be:
pin=12345-0 d=123 [A\_foo=nice@bar.com](mailto:A_foo=nice@bar.com) B\_foo=bobo C\_foo=12345.
However what I'm getting right now is:
pin=12345~0 d=123 foo= [nice@bar.com](mailto:nice@bar.com), bobo, 1234
[//pin=12345~0&d=123&foo=nice@bar.com](https://pin=12345~0&d=123&foo=nice@bar.com)&foo=bobo&foo=12345 //
// filter { //
// kv { //
// field\_split =\> "&?" //
// } //
// } //
---
### Author:  [@Badger](https://discuss.elastic.co/u/Badger)
#### Post date: [October 17, 2019, 3:49pm UTC](https://discuss.elastic.co/t/single-key-field-with-multiple-values-to-multiple-key-fields-with-single-fields-convertion/204090/2 "2019-10-17T15:49:25Z")
You could do that using a ruby filter
```
kv { field_split => "&" }
ruby {
code => '
foo = event.get("foo")
foo.each_index { |x|
event.set("foo-#{x}", foo[x])
}
'
}
```
---
### Author:  [@Andres\_Man](https://discuss.elastic.co/u/Andres_Man)
#### Post date: [October 17, 2019, 3:50pm UTC](https://discuss.elastic.co/t/single-key-field-with-multiple-values-to-multiple-key-fields-with-single-fields-convertion/204090/3 "2019-10-17T15:50:41Z")
@Badger Thanks, that did the trick.
---
### Author:  [@system](https://discuss.elastic.co/u/system)
#### Post date: [November 14, 2019, 3:50pm UTC](https://discuss.elastic.co/t/single-key-field-with-multiple-values-to-multiple-key-fields-with-single-fields-convertion/204090/4 "2019-11-14T15:50:45Z")
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