arcDistance using _source in painless script

Elastic Stack Elasticsearch
1

I was trying to use arcDistance using the following:

PUT /my_locations
{
    "mappings": {
        "location": {
            "properties": {
                "pin": {
                    "properties": {
                        "location": {
                            "type": "geo_point"
                        }
                    }
                }
            }
        }
    }
}

PUT /my_locations/location/1
{
    "pin" : {
        "location" : {
            "lat" : 40.12,
            "lon" : -71.34
        }
    }
}

GET /my_locations/location/_search
{
    "query": {
        "bool" : {
            "must" : {
                "match_all" : {}
            },
            "filter" : {
                "geo_distance" : {
                    "distance" : "200km",
                    "pin.location" : {
                        "lat" : 40,
                        "lon" : -70
                    }
                }
            }
        }
    },

    "script_fields": {
								"closest_listing" : {
									"script": {
										"lang": "painless",
										"inline": "return params._source.pin.location.arcDistance(40.0,-72.0)"
										}
									}
								}
}

when I execute the query I get

{
  "took": 32,
  "timed_out": false,
  "_shards": {
    "total": 5,
    "successful": 4,
    "failed": 1,
    "failures": [
      {
        "shard": 3,
        "index": "my_locations",
        "node": "4Ts84JXZTiCaQjSx-7q7MQ",
        "reason": {
          "type": "script_exception",
          "reason": "runtime error",
          "caused_by": {
            "type": "illegal_argument_exception",
            "reason": "Unable to find dynamic method [arcDistance] with [2] arguments for class [java.util.HashMap]."
          },
          "script_stack": [
            "return params._source.pin.location.arcDistance(40.0,-72.0)",
            "                                  ^---- HERE"
          ],
          "script": "return params._source.pin.location.arcDistance(40.0,-72.0)",
          "lang": "painless"
        }
      }
    ]
  },
  "hits": {
    "total": 1,
    "max_score": 1,
    "hits": []
  }
}

Is it possible to calculate the distance using _source? I need to because I store multiple geo_points in an array per document and want to calculate the closest distance.

2

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