[JENKINS-15920] Boolean parameter becomes string

I have a boolean parameter in my job. It is shown as a checkbox on the job 'parameters' page.

When I trigger this job via the Parameterized Trigger plug-in, I set the parameter the following way:

NIGHTLY=true

As a result, the triggered job has the word "true", not the checkbox. See screenshots attached.

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Originally reported by alex01ves, imported from: Boolean parameter becomes string

• assignee: cjo9900
  
• status: Reopened
  
• priority: Minor
  
• component(s): parameterized-trigger-plugin
  
• resolution: Unresolved
  
• votes: 0
  
• watchers: 5
  
• imported: 2025-12-07
  

Raw content of original issue

I have a boolean parameter in my job. It is shown as a checkbox on the job 'parameters' page.


When I trigger this job via the Parameterized Trigger plug-in, I set the parameter the following way:

NIGHTLY=true


As a result, the triggered job has the word "true", not the checkbox. See screenshots attached.

4 attachments

- [Screenshot_2018-01-24_07-55-22.png](https://issues.jenkins.io/secure/attachment/41221/Screenshot_2018-01-24_07-55-22.png)
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- [Screenshot_2018-01-24_07-56-22.png](https://issues.jenkins.io/secure/attachment/41220/Screenshot_2018-01-24_07-56-22.png)
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- [_bad.png](https://issues.jenkins.io/secure/attachment/22871/_bad.png)
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- [_good.png](https://issues.jenkins.io/secure/attachment/22870/_good.png)
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