# Count length of field / number of characters in a field and add the result into a new field

**URL:** <https://discuss.elastic.co/t/count-length-of-field-number-of-characters-in-a-field-and-add-the-result-into-a-new-field/157705>\
**Category:** Logstash\
**Created:** [November 21, 2018, 12:17pm UTC](https://discuss.elastic.co/t/count-length-of-field-number-of-characters-in-a-field-and-add-the-result-into-a-new-field/157705 "2018-11-21T12:17:30Z")\
**Posts on this page:** 1\
**Showing post:** 8

<div class="post-metadata">

**Author:** ![Eniqmatic](https://avatars.discourse-cdn.com/v4/letter/e/ea5d25/32.png) [@Eniqmatic](https://discuss.elastic.co/u/Eniqmatic)\
**Post date:** [November 22, 2018, 2:19pm UTC](https://discuss.elastic.co/t/count-length-of-field-number-of-characters-in-a-field-and-add-the-result-into-a-new-field/157705/8 "2018-11-22T14:19:02Z")

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Can you try this:

```
filter {
   if [log_name] == "Microsoft-Windows-Sysmon/Operational" {
      ruby {
	     code => "event['processcreate'] = event['process_command_line'].length"
	  }   
   }
}
```

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_[View the full topic](https://discuss.elastic.co/t/count-length-of-field-number-of-characters-in-a-field-and-add-the-result-into-a-new-field/157705)._