Trying to aggregate, but I can't see any aggregated logs

[tomer (tomer zaks)]

Hi,
I am trying to clone and aggregate, but I can't see any cloned or aggregated logs.

input {
  beats {
    port => 5044
  }
}

filter {
    json{
        source => "message"
    }
    clone {
      clones => ["clone"]
    }
    if [type] == "clone" {
        aggregate {
                task_id => "%{transactionId}"
                code => "map['eventTimestamp'] = 0"
                push_map_as_event_on_timeout => true
                timeout => 10
        }
    }
}

output {
    elasticsearch {
      hosts => ["192.168.1.116:9200"]
      manage_template => false
      index => "%{[@metadata][beat]}-%{+YYYY.MM.dd}"
      document_type => "%{[@metadata][type]}"
  }

}

can someone see the problem?
In the logstash logs I am getting that the aggregation is success but I can't see any log from the kibana that fits the aggregation