How to build a visualization for data received from collectd in kibana 4.2?

Question

logstash

Hello everyone,
I have logstash 2.0 + kibana 4.2 + EL 2.0 + collectd
logstash configured like this:

input {
  udp {
    port => 25826
    buffer_size => 1452
    codec => collectd { }
     type => "collectd"
  }
}
output {
  elasticsearch {
    host => "my_es_cluster.foo"
  }
}

In kibana I see the data. The problem is that there is one field - message in which there are subfields. If I want to build a visualization, then I just can't select them. But I can search.