Jolt: Conditional placing value if boolean is true

I have this case where if defaultshipping is true, the phone should be placed into shippingAddressBook->phone (same for billing). My transformation is close but the issue is that it is not grabbing the value of "phone".

Can someone help me with this please 🙂

Input:

{
  "phone": "869-947-4444",
  "defaultshipping": false,
  "defaultbilling": true
}

Expected Output:

{
  "billingAddressBook" : {
    "phone" : "869-947-4444"
  }
}

My transformation attempt:

[
  {
    "operation": "shift",
    "spec": {
      "defaultbilling": {
        "true": {
          "#phone": "billingAddressBook.phone"
        }
      },
      "defaultshipping": {
        "true": {
          "#phone": "shippingAddressBook.phone"
        }
      }
    }
  }
]

>Solution :

Yes, you’re so close, just need to go 2 level up in order to reach the level of phone and grab the value through use of @(2,phone) such as

[
  {
    "operation": "shift",
    "spec": {
      "defaultbilling": {
        "true": {
          "@(2,phone)": "billingAddressBook.phone"
        }
      },
      "defaultshipping": {
        "true": {
          "@(2,phone)": "shippingAddressBook.phone"
        }
      }
    }
  }
]