# Create new field with metadata content
**URL:** https://discuss.elastic.co/t/create-new-field-with-metadata-content/136052
**Category:** Logstash
**Created:** [June 15, 2018, 8:33am UTC](https://discuss.elastic.co/t/create-new-field-with-metadata-content/136052 "2018-06-15T08:33:27Z")
**Posts on this page:** 6
**Page:** 1
### Author:  [@dyl](https://discuss.elastic.co/u/dyl)
#### Post date: [June 15, 2018, 8:33am UTC](https://discuss.elastic.co/t/create-new-field-with-metadata-content/136052/1 "2018-06-15T08:33:28Z")
Hey guys,
Thanks to my pipeline, I can extract data and store it to a metadata field :
```
if ([ID2] == "000003")
{
grok
{
match => { "DESCRIPTION" => ["%{DATA:TEST}/%{WORD:NOM_BATCH}-%{BASE16NUM:DATE_BATCH}-%{GREEDYDATA:RESTE}"] }
}
ruby
{
code => "@save_the_date = event.get('DATE_BATCH')"
}
}
else
{
ruby
{
code => "event.set('DATE_BATCH', @save_the_date)"
}
```
So now, how to add\_field with @save\_the\_date content ? because i tried to do :
```
add_field => {
"TESTDATE" => "%{@save_the_date}"
}
```
But it doesn't work
Can somebody help me ?
Thx for all
---
### Author:  [@magnusbaeck](https://discuss.elastic.co/u/magnusbaeck)
#### Post date: [June 15, 2018, 1:44pm UTC](https://discuss.elastic.co/t/create-new-field-with-metadata-content/136052/2 "2018-06-15T13:44:00Z")
I don't understand. Your second ruby filter should do exactly what you're looking for.
---
### Author:  [@dyl](https://discuss.elastic.co/u/dyl)
#### Post date: [June 15, 2018, 1:49pm UTC](https://discuss.elastic.co/t/create-new-field-with-metadata-content/136052/3 "2018-06-15T13:49:32Z")
I try to do that because in this case @save\_the\_date is empty .. Look at my first discussion with Badger on this subject to understand better :
> [@Method to timestamp my logstash events](https://discuss.elastic.co/t/method-to-timestamp-my-logstash-events/135888):
>
> Hello everybody, I have this input log : INFO;0000;000001;\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\* INFO;0000;000002;\* LOG D'EXECUTION \* INFO;0000;000003;\* /data/EDT/batchs/files/logs/MNS014MT-20180612-20180613-0105.log \* INFO;0000;000004;\* …
---
### Author:  [@magnusbaeck](https://discuss.elastic.co/u/magnusbaeck)
#### Post date: [June 15, 2018, 2:02pm UTC](https://discuss.elastic.co/t/create-new-field-with-metadata-content/136052/4 "2018-06-15T14:02:51Z")
Okay, but then the real problem is that `@save_the_date` is empty, not that you can't save it into a field.
I don't know why you started a new thread. The old problem seems to remain unsolved.
---
### Author:  [@dyl](https://discuss.elastic.co/u/dyl)
#### Post date: [June 15, 2018, 2:05pm UTC](https://discuss.elastic.co/t/create-new-field-with-metadata-content/136052/5 "2018-06-15T14:05:31Z")
Ok thx you for answer I'll solve this one and continue to speak on the other one
---
### Author:  [@system](https://discuss.elastic.co/u/system)
#### Post date: [July 13, 2018, 2:05pm UTC](https://discuss.elastic.co/t/create-new-field-with-metadata-content/136052/6 "2018-07-13T14:05:46Z")
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