version: '0.10'
variables:
- variable:
    name: server_deployed
    type: boolean
    value:
    - text: false
- variable:
    name: my_variable
    auto_freeze: true
    hidden: true
    value:
    - text: 'no'
constraints:
- fill:
  - name: calc_val
    param:
    - text: 'yes'
    target:
    - text: my_variable