netflow.conf for logstash (not working with ASA)

netflow.conf

input {
  udp {
    port => 6343
    codec => netflow { versions => [ 5, 9] }
    type => "netflow"
  }
}
output {
      if [type] == "netflow" {
  		elasticsearch { host => localhost }
  		file { 
    			path => "/var/log/logstash/rawdata.log" 
    			type => "netflow"
  		}
	}
}