# Double dereference variable

**URL:** <https://discuss.elastic.co/t/double-dereference-variable/39370>\
**Category:** Logstash\
**Created:** [January 16, 2016, 6:50am UTC](https://discuss.elastic.co/t/double-dereference-variable/39370 "2016-01-16T06:50:36Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![CamJN](https://avatars.discourse-cdn.com/v4/letter/c/5f8ce5/32.png) [@CamJN](https://discuss.elastic.co/u/CamJN)\
**Post date:** [January 16, 2016, 6:50am UTC](https://discuss.elastic.co/t/double-dereference-variable/39370/1 "2016-01-16T06:50:37Z")

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Is there a faster way to do the following?

```
ruby {
  code => "event['value'] = event[event['column']]"
}
```

---

<div class="post-metadata">

**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\
**Post date:** [July 6, 2017, 5:15am UTC](https://discuss.elastic.co/t/double-dereference-variable/39370/2 "2017-07-06T05:15:32Z")

</div>

Closed on July 6, 2017, 5:15am UTC