How to search/query on docs that have specific file size

Elastic Stack Elasticsearch
4

Thanks guys ...
This link is also useful:
query-string-with-range

The query should be like this:

GET /_search
{
  "_source": [
    "file.*"
  ],
  "query": {
    "bool": {
      "must": [
        {
          "query_string": {
            "query": "all"
          }
        },
        {
          "range": {
            "file.filesize": {
              "gte": 900,
              "lte": 100000
            }
          }
        }
      ]
    }
  },
  "sort": {
    "_score": {
      "order": "desc"
    }
  }
}