# How can I create new events in ruby filter?
**URL:** https://discuss.elastic.co/t/how-can-i-create-new-events-in-ruby-filter/63199
**Category:** Logstash
**Created:** [October 17, 2016, 3:38pm UTC](https://discuss.elastic.co/t/how-can-i-create-new-events-in-ruby-filter/63199 "2016-10-17T15:38:51Z")
**Posts on this page:** 3
**Page:** 1
### Author:  [@CraigFoote](https://discuss.elastic.co/u/CraigFoote)
#### Post date: [October 17, 2016, 3:38pm UTC](https://discuss.elastic.co/t/how-can-i-create-new-events-in-ruby-filter/63199/1 "2016-10-17T15:38:51Z")
I want to create new events from the existing one. I'd rather not create, compile and install a new filter if possible rather I'd like to use a ruby filter, e.g.
```
filter{
ruby{
code => '
host_list = event["hostList"]
# create new event for each host
host_list.each do |host|
new_event = event.clone
# add/remove stuff from new_event
yield new_event #FAILS! yield called out of block
end
'
}
}
```
I understand why the yield fails but I don't know how to make the new event show up in rubydebug codec. Any help appreciated.
Craig
---
### Author:  [@CraigFoote](https://discuss.elastic.co/u/CraigFoote)
#### Post date: [October 17, 2016, 5:46pm UTC](https://discuss.elastic.co/t/how-can-i-create-new-events-in-ruby-filter/63199/2 "2016-10-17T17:46:02Z")
Just saw this: [configuration - Logstash dynamically split events - Stack Overflow](http://stackoverflow.com/questions/26074782/logstash-dynamically-split-events)
> You need to resort to a custom filter for this (you can't call yield from a ruby code filter which is what's needed to generate new events).
---
### Author:  [@system](https://discuss.elastic.co/u/system)
#### Post date: [July 6, 2017, 4:33am UTC](https://discuss.elastic.co/t/how-can-i-create-new-events-in-ruby-filter/63199/3 "2017-07-06T04:33:54Z")