Jenkins dynamically put checkbox

Question

Let's say I have a dropdown list parameter with a few selections and I want one of the selections to bring checkboxes, otherwise they will not be shown.

How can I do that? I tried Extended Parameter but no help, please help me.

First selection will call another multi-choice selections (checkboxes),

But only one selection will do that, others will not bring another selection.

Answer 1

According to Ross Tracy's answer:

• Add an Active Choices Parameter with:

  Name: Active_Choices_Parameter

  Groovy Script:

  return [
    '',
    'First',
    'Second',
    'Third'
  ]
  

  Choice Type: Single Select

• Add an Active Choices Reactive Parameter with:

  Name: Active_Choices_Reactive_Parameter

  Groovy Script:

  if ( Active_Choices_Parameter.equals('') )
    return ''
  else if ( Active_Choices_Parameter.equals('First') )
    return [
      '1. Fourth',
      '1. Fifth',
      '1. Sixth'
    ]
  

  Choice Type: Check Boxes

  Referenced parameters: Active_Choices_Parameter