What options are there for output variables

[TimChermin]

Apologies if this is written somewhere. But I cannot seem to find (or understand) how to use output variables.
I want to create a Parent item (Product backlog item) and after creating that item. I want to link a child task to it.
I am using Azure Devops services

# 1. Create parent PBI
- task: CreateWorkItem@2
  name: CreateParent
  displayName: 'Create parent PBI'
  inputs:
    workItemType: 'Product Backlog Item'
    title: 'Release sprint TEST'
    areaPath: 'Testing'
    iterationPath: 'Sprint TEST'
    createOutputs: true
    outputVariables: 'Id=Id'
    authType: 'internal'

# 2. Create child tasks
- task: CreateWorkItem@2
  displayName: 'Task -Test sprint'
  inputs:
    workItemType: 'Task'
    title: 'Task Test'
    areaPath: 'Aybler'
    iterationPath: 'Sprint TEST'
    linkWorkItems: true
    linkType: 'System.LinkTypes.Hierarchy-Reverse'
    targetId: '$(Id)'
    authType: 'internal'

I can make the targetId work when using a hardcoded ID. But I want to automatically get the ID of the created PBI.
What am I doing wrong?

[ReneSchumacher]

Hi @TimChermin,

I just realized that there is a small bug in the extension. While the documentation states that the default for linkTarget is id, it actually is associate. Interesting that no one has reported this before.

Currently, we cannot push any updates to the extension and, thus, cannot fix the bug. Please add the linkTarget: id input to your task. Everything should work then.