Custom logs Filebeat Index

[marcosvmauri (Marcos Mauri)]

Hi!
I have a Filebeat server configured to capture IIS logs.
And I would like to capture custom logs, but after parameterizing the filebeat.yaml files and placing the logs in the indicated folder, I cannot view the logs through kibana.
I checked the index setting in the Index Patterns section and the fields are not displayed.

I'm using version 7.5.1
Filebeat.yml

filebeat.inputs:

- type: log
  enabled: true
  paths:
    - ./log/*.log
  json.keys_under_root: true
  json.add_error_key: true    

logstash.conf

input {
  beats {
    port => 5044
  }
}

output {
  elasticsearch {
    hosts => ["Server1:9200", "Server2:9200", "Server3:9200"]
    index => "%{[@metadata][beat]}-%{[@metadata][version]}-%{+YYYY.MM.dd}"
  }
}