Perform nested sort without inner_hits in ElasticSearch

Question

I need some help on querying records from ELasticSearch (1.7.3). We will be getting a list of evaluations performed and display only the last evaluation done as shown below:

 evaluation: [
  {
    id: 2,
    breaches: null
  },
  {
    id: 6,
    breaches: null
  },
  {
    id: 7,
    breaches: null
  },
  {
    id: 15,
    breaches: null
  },
  {
    id: 18,
    breaches: [
      "rule_one",
      "rule_two",
      "rule_three"
    ]
  },
  {
    id: 19,
    breaches: [
      "rule_one",
      "rule_two",
      "rule_three"
    ]
  }
]

Now we need to query records on the basis of latest evaluation performed, that is to query only on the last object of the evaluation array. We found out the there is a support of inner_hits to sort and limit the nested records. For that we wrote a query to sort on the basis of evaluation id in desc order and limit its size to 1 as shown below:

{
  "query": {
    "bool": {
      "must": {
        "nested": {
          "path": " evaluation",
          "query": {
            "bool": {
              "must": {
                "term": {
                  " evaluation. breaches": "rule_one"
                }
              }
            }
          },
          "inner_hits": {
            "sort": {
              " evaluation.id": {
                "order": "desc"
              }
            },
            "size": 1
          }
        }
      }
    }
  }
}

Please find the mapping below:

evaluation: {
  type: "nested",
  properties: {
    id: {
      type: "long"
    },
    breaches: {
      type: "string"
    }
  }
}

We tried sorting records but it did not worked, can you suggest some other ways to search on just the last object of nested records.

Thanks.