title: Active Choices Reactive Reference Parameter in jenkins pipeline
body: <p>I'm using the Active Choices Reactive Reference Parameter plugin in a dsl job here the code </p>
  
  <pre><code> parameters {
                    activeChoiceParam('choice1') {
                        description('select your choice')
                        choiceType('RADIO')
                        groovyScript {
                            script("return['aaa','bbb']")
                            fallbackScript('return ["error"]')
                        }
                    }
                    activeChoiceReactiveParam('choice2') {
                        description('select your choice')
                        choiceType('RADIO')
                        groovyScript {
                            script("if(choice1.equals("aaa")){return ['a', 'b']} else {return ['aaaaaa','fffffff']}")
                            fallbackScript('return ["error"]')
                        }
                        referencedParameter('choice1')
                    }
  </code></pre>
  
  <p>and it work's fine what i want now is how to use the activeChoiceReactiveParam  in a jenkinsFile for pipeline job i did that :</p>
  
  <pre><code>properties(
      [
              [
                      $class              : 'ParametersDefinitionProperty',
                      parameterDefinitions: [
                              [
                                      $class     : 'ChoiceParameterDefinition',
                                      choices    : 'aaa\nbbb',
                                      description: 'select your choice : ',
                                      name       : 'choice1'
                              ]
  </code></pre>
  
  <p>but how can i add the choice2 parameter !!!</p>