Custom index template is not working

[Hetal_Parmar]

I m trying to make custom index mapping template and use it with logstash

logstash config file output section
output{
elasticsearch {
hosts => "localhost:9200"
index => "employee_index"
document_id =>"%{empid}"
manage_template => false
template => "E:/abc/myfolder/data/testmapping.json"
template_name => "employee_index_1"
template_overwrite => true
}

following is testmapping.json file

{
  "template": "employee_index_1",
  "order":    1,
    "index_patterns": [
    "emp*" ],
  "mappings": {
    "_doc": {
      "_source": {
        "enabled": false
      },
      "properties": {
        "empid": {
          "type": "integer"
        },
        "empname": {
          "type": "text"
      
        },
		 "deptid": {
          "type": "integer"
      
        },
		 "revid": {
          "type": "integer"
      
        },
		"revenue":{
		"type":"nested",
			"properties": {
				"2013": {
					"type": "long"
      
						},
				"2014": {
					"type": "long"
      
						}
			}
		}
		
		
		
      }
    }
  }
}

now i m getting following output
{
"_index" : "employee_index",
"_type" : "doc",
"_id" : "4585",
"_score" : 1.0,
"_source" : {
"deptid" : 2222,
"revid" : 1256,
"empid" : 4585,
"rev2013" : "119.3",
"@version" : "1",
"empname" : "hetal k",
"@timestamp" : "2019-02-04T16:48:56.961Z",
"rev2014" : "830.3"
}
},

in mappings i mentioned nested field for revenue which is not coming in output

elasticsearch logs
[employee_index] creating index, cause [auto(bulk api)], templates , shards [5]/[1], mappings
[employee_index/OLr_2LyAQ4eMMuTLFQAwYA] create_mapping [doc]

GET _template/employee_index_1
is showing {}
so i guess the index template has not been created
Please help to sort out this issue.
Thanks

[Hetal_Parmar]

if someone face same problem pls share your workaround .
thanks