Thanks Jacob and Alex!

Which version of Jenkins does this work for you on?
I've tried with the following Jenkinsfile on 2.46.1 but no matter how many 
times I ran, the parameters never showed up in the console.

parameters {

   string(name: 'bld', defaultValue: 'full', description: '')

   string(name: 'branch', defaultValue: 'dev', description: '')

}


node {

   if (getBinding().hasVariable("bld")) {

      echo "SET"

   } else {

      echo "NOTSET"

   }

}

On Friday, 4 August 2017 03:27:44 UTC+10, Alex Marcon wrote:
>
> That's right... to define, it is something like:
>
>     parameters {
>         string(name: 'bld', defaultValue: 'full', description: '')
>         string(name: 'branch', defaultValue: 'dev', description: '')
>     }
>
> you may load some properties from a file and use those variables for 
> defaultValue...
>
> AM
>
> On Thursday, 3 August 2017 04:13:54 UTC-4, Jacob Larsen wrote:
>>
>> Yes, kind of...
>>
>> The parameters are hidden in the "properties" structure. They will be 
>> applied to the job when it runs, meaning that the first run will not have 
>> these parameters defined. If you make your Jenkinsfile robust for undefined 
>> parameters, it should be doable, just remember that they will apply to the 
>> second build.
>>
>> /Jacob
>>
>> On 2017-08-03 04:03, Craig Barr wrote:
>>
>> In Jenkins you can select "This project is parameterized" and add 
>> parameters. My question is simple: 
>> Can this parameter metadata be populated by an alternative 
>> version-controlled source? 
>>
>> For example, can I define parameter definitions in my Jenkinsfile so that 
>> when I click Build Now it will populate the parameters from this source?
>> If this is not possible, are they any other suggestions for addressing 
>> such a requirement?
>>
>> Thanks!
>>
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