# How to add a character to a particular field value?

**URL:** https://discuss.elastic.co/t/how-to-add-a-character-to-a-particular-field-value/135173
**Category:** Logstash
**Created:** [June 8, 2018, 2:45pm UTC](https://discuss.elastic.co/t/how-to-add-a-character-to-a-particular-field-value/135173 "2018-06-08T14:45:21Z")
**Posts on this page:** 3
**Page:** 1

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### Author: ![amruth](https://avatars.discourse-cdn.com/v4/letter/a/43a26b/32.png) [@amruth](https://discuss.elastic.co/u/amruth)
#### Post date: [June 8, 2018, 2:45pm UTC](https://discuss.elastic.co/t/how-to-add-a-character-to-a-particular-field-value/135173/1 "2018-06-08T14:45:21Z")

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Hi,

I am using grok to extract fields. Once the field is extracted, I want to add `}` at the end. Please let me know how it can be done?

Thanks

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### Author: ![Badger](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/badger/32/25190_2.png) [@Badger](https://discuss.elastic.co/u/Badger)
#### Post date: [June 8, 2018, 3:03pm UTC](https://discuss.elastic.co/t/how-to-add-a-character-to-a-particular-field-value/135173/2 "2018-06-08T15:03:36Z")

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Please do not start multiple threads for the same question. I answered this in the [other](https://discuss.elastic.co/t/how-to-extract-json-out-of-an-event/134684) thread.

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### 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, 2018, 3:03pm UTC](https://discuss.elastic.co/t/how-to-add-a-character-to-a-particular-field-value/135173/3 "2018-07-06T15:03:37Z")

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