# Ruby exception occurred: event\['field'\]) have been disabled
**URL:** https://discuss.elastic.co/t/ruby-exception-occurred-event-field-have-been-disabled/76270
**Category:** Logstash
**Created:** [February 23, 2017, 4:59pm UTC](https://discuss.elastic.co/t/ruby-exception-occurred-event-field-have-been-disabled/76270 "2017-02-23T16:59:27Z")
**Posts on this page:** 7
**Page:** 1
### Author:  [@Beuhlet\_Reseau](https://discuss.elastic.co/u/Beuhlet_Reseau)
#### Post date: [February 23, 2017, 4:59pm UTC](https://discuss.elastic.co/t/ruby-exception-occurred-event-field-have-been-disabled/76270/1 "2017-02-23T16:59:27Z")
Hello,
I use this pattern to convert hexadecimal fields to decimal fields :
```
mutate {
convert => { "hexa_value" => "integer" }
}
ruby {
code => 'event["hexa_value"] = event["hexa_value"].hex'
}
```
I have this error message :
```
Ruby exception occurred: Direct event field references (i.e. event['field']) have been disabled in favor of using event get and set methods
```
Documentation precognize set and get ?? I should to try line than :
```
ruby {
code => 'event.get("hexa_value") = event.set("hexa_value").hex'
}
```
?
Thank you for your help
---
### Author:  [@Ruthu\_Ramya](https://discuss.elastic.co/u/Ruthu_Ramya)
#### Post date: [February 24, 2017, 4:28am UTC](https://discuss.elastic.co/t/ruby-exception-occurred-event-field-have-been-disabled/76270/2 "2017-02-24T04:28:04Z")
> [@Beuhlet\_Reseau](#):
>
> hexa\_value
Hi,
Try this:
```
ruby {
code => "event.set('hexa_value', event.get('hexa_value').hex)"
}
```
---
### Author:  [@Beuhlet\_Reseau](https://discuss.elastic.co/u/Beuhlet_Reseau)
#### Post date: [March 6, 2017, 9:22am UTC](https://discuss.elastic.co/t/ruby-exception-occurred-event-field-have-been-disabled/76270/3 "2017-03-06T09:22:16Z")
> [@Ruthu\_Ramya](#):
>
> ').hex)"
Hey @Ruthu_Ramya ,
It doesn't work 😕
The error message :
```
[ERROR][logstash.filters.ruby] Ruby exception occurred: undefined method `hex' for 2:Fixnum
```
I use it to upload logs :
```
mutate {
convert => { "hexa_value" => "integer" }
}
ruby {
code => "event.set('hexa_value', event.get('hexa_value').hex)"
}
```
Thank you
---
### Author:  [@Ruthu\_Ramya](https://discuss.elastic.co/u/Ruthu_Ramya)
#### Post date: [March 9, 2017, 4:05am UTC](https://discuss.elastic.co/t/ruby-exception-occurred-event-field-have-been-disabled/76270/4 "2017-03-09T04:05:53Z")
Hi Beuhlet\_Reseau,
In my earlier post, I try to indicate how to use the events with new Logstash version. The Ruby exception should be answered by a Ruby expert, I do not know Ruby.
Regards,
Ruthu
---
### Author:  [@Beuhlet\_Reseau](https://discuss.elastic.co/u/Beuhlet_Reseau)
#### Post date: [March 9, 2017, 10:07am UTC](https://discuss.elastic.co/t/ruby-exception-occurred-event-field-have-been-disabled/76270/5 "2017-03-09T10:07:25Z")
@Ruthu_Ramya
No no, I think the syntaxe is uncorrect. Have you even use ruby ?
---
### Author:  [@Ruthu\_Ramya](https://discuss.elastic.co/u/Ruthu_Ramya)
#### Post date: [March 9, 2017, 10:10am UTC](https://discuss.elastic.co/t/ruby-exception-occurred-event-field-have-been-disabled/76270/6 "2017-03-09T10:10:15Z")
@Beuhlet_Reseau,
I have never used Ruby.
---
### Author:  [@system](https://discuss.elastic.co/u/system)
#### Post date: [April 6, 2017, 10:10am UTC](https://discuss.elastic.co/t/ruby-exception-occurred-event-field-have-been-disabled/76270/7 "2017-04-06T10:10:20Z")
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