Kibana 5.2, How to set "searchable" or "aggregatable"

Elastic Stack Kibana
4

Thanks, warkolm.
I changed the mappings as below.

{
  "mappings": {
    "logs": {
      "_source": {
        "enabled": true
      },
      "_all": {
        "enabled": true
      },
      "properties": {
        "id": {
          "type": "integer"
        },
        "timestamp": {
          "type":   "date"
        },
        "customer_id": {
          "type": "integer"
        },
        "customer_name": {
          "type": "keyword"
        },
        "description": { 
          "type": "string",
          "index": "analyzed"
        }
      }
    }
  }
}

but situation is not changed. Kibana still cannot set the status to searchable.

In case, I cannot use the non-searchable field in dashboards.

Any idea?