Having the following input json:

{
  "familyMembers": [
    {
      "name": "Richard",
      "living": "Yes"
    },
    {
      "name": "Napoleon",
      "living": "No"
    }
  ]
}

the goal is to change "living": "Yes" to "living": "true", so that desired output would be like this:

{
  "familyMembers" : [
    {
      "firstName" : "Richard",
      "living": "true"
    },
    {
      "firstName" : "Napoleon",
      "living": "false"
    }
  ]
}

The following spec does not produce a desired output:

[
  {
    "operation": "shift",
    "spec": {
      "familyMembers": {
        "*": {
          "name": "familyMembers[&1].firstName",
          "living": {
            "Yes": {
              "#true": "familyMembers[&1].living"
            },
            "*": {
              "#false": "familyMembers[&1].living"
            }
          }
        }
      }
    }
  }
]

The living field is not included. If the familyMember is changed from an array to a map, then the living field is included in the output with the expected value like in this example: