# Logstash - cannot delete "\]" sign
**URL:** https://discuss.elastic.co/t/logstash-cannot-delete-sign/93974
**Category:** Logstash
**Created:** [July 20, 2017, 3:32pm UTC](https://discuss.elastic.co/t/logstash-cannot-delete-sign/93974 "2017-07-20T15:32:05Z")
**Posts on this page:** 3
**Page:** 1
### Author:  [@rachel1](https://discuss.elastic.co/u/rachel1)
#### Post date: [July 20, 2017, 3:32pm UTC](https://discuss.elastic.co/t/logstash-cannot-delete-sign/93974/1 "2017-07-20T15:32:05Z")
Hi!
I'm trying to convert a text type field into a float one in Logstash and ElasticSearch mapping.
field name: votingPercentage.
My log looks as follow: "votingPercentage = 0.13]"
Since there's a "]" sign in the end of the field's value - the ElasticSearch cannot map it into float.
In order to delete the "]" sign, I've tried to do the following configuration in logstash.conf file:
mutate {
gsub =\> [
"votingPercentage", "[]g]", " "
]
}
(using g as global)
This configuration has dropped the "]" sign and enabled the votingPercentage field to be mapped as float, but it has also dropped any appearance of the "g" letter in the field, so the result is: "votin Percenta e" is now the field name.
Can you please assist me?
---
### Author:  [@rach](https://discuss.elastic.co/u/rach)
#### Post date: [July 25, 2017, 8:09am UTC](https://discuss.elastic.co/t/logstash-cannot-delete-sign/93974/2 "2017-07-25T08:09:41Z")
I've found a solution for this issue:
mutate {
gsub =\> ["votingPercentage", "]", " ]" ]
}
The field votingPercentage can be mapped into float type in Elasticserach.
---
### Author:  [@system](https://discuss.elastic.co/u/system)
#### Post date: [August 22, 2017, 8:09am UTC](https://discuss.elastic.co/t/logstash-cannot-delete-sign/93974/3 "2017-08-22T08:09:52Z")
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