Jsoncpp - access array element inside an object?

Is there a "proper" way to extract an element of array which is a child of an object in JsonCPP?

I'm dealing with JsonRPC objects along the lines of:

{
    "jsonrpc": "2.0",
    "id": 1,
    "result": {
        "data": [{
            "state": 7,
            "stateticks":362220
        }],
        "ticks": 416410
    }
}

If I want to pull the first (or, n-th, for that matter) element of the array, by doing

  Json::Value& sessionData = object["result"]["data"][0]; 

I'm getting the error of:

 error: ambiguous overload for ‘operator[]’ (operand types are ‘const Json::Value’ and ‘int’)
 116 |                 Json::Value& sessionData = object["result"]["data"][0];

I can bypass this by creating an intermediate variable:

  Json::Value& allSessionData = object["result"]["data"]; 
  Json::Value& sessionData = allSessionData[0]; 

but I'm also dealing with nested arrays and generally I don't like multiplying helper variables like that and I bet there is a better way... can you help?