# XML Logstash
**URL:** https://discuss.elastic.co/t/xml-logstash/277160
**Category:** Logstash
**Created:** [June 27, 2021, 7:20pm UTC](https://discuss.elastic.co/t/xml-logstash/277160 "2021-06-27T19:20:05Z")
**Posts on this page:** 3
**Page:** 1
### Author:  [@leggomyego](https://discuss.elastic.co/u/leggomyego)
#### Post date: [June 27, 2021, 7:20pm UTC](https://discuss.elastic.co/t/xml-logstash/277160/1 "2021-06-27T19:20:05Z")
Custom fields have been tricky because they are in an array. I can rename them fine and everything, but I am looking for a Ruby answer to my issue. For instance, if the field names are [test][test][0][test], [test][test][1][test], [test][test][2][test]... how do I get the nested fields to [test][test][whatever\_i\_rename] for each item?
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### Author:  [@leggomyego](https://discuss.elastic.co/u/leggomyego)
#### Post date: [June 27, 2021, 7:21pm UTC](https://discuss.elastic.co/t/xml-logstash/277160/2 "2021-06-27T19:21:27Z")
@Badger this question is mostly for you lol
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### Author:  [@system](https://discuss.elastic.co/u/system)
#### Post date: [July 25, 2021, 7:21pm UTC](https://discuss.elastic.co/t/xml-logstash/277160/3 "2021-07-25T19:21:28Z")
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