id: pack_example
outputs:
  result: ${  $("input")  }
steps:
  - name: step 1
    id: step1
    setup:
      - act: on_created
        then:
          - act: set
            # set step custom data
            inputs:
              my_data: null
      - act: on_completed
        then:
          - act: msg
            key: msg1
            inputs:
              # got the my_data value and send with the msg
              my_data: ${ $("my_data") }
    acts:
      - act: pack
        # use package in pack act
        key: pack1
        inputs:
          # set the inputs variable from global 'input'
          a: ${ $("input") }
  - name: step 2
    # use package in step
    uses: pack2