Jenkins: How to use choice parameter in declarative pipeline?

Question

My example:

pipeline {
  agent any
  parameters {
    choice(
        name: 'myParameter',
        choices: "Option1\Option2",
        description: 'interesting stuff' )
  }
}

outputs with error:

"  unexpected char: '\'  " on the line with "choices" "

Following these instructions: https://github.com/jenkinsci/pipeline-model-definition-plugin/wiki/Parametrized-pipelines

Any idea or advice on what I do wrong?

Answer 1

The documentation for declarative jenkins pipelines says:

A choice parameter, for example:

pipeline { 
    .....
     parameters { 
       choice(name: 'CHOICES', choices: ['one', 'two', 'three'], description: '') }

First one is the default value

Answer 2

You need to use \n instead of \. See this code:

  pipeline {
  agent any
  parameters {
    choice(
        name: 'myParameter',
        choices: "Option1\nOption2",
        description: 'interesting stuff' )
  }
}