Logstash is creating data streams instead of indices in ES

elasticsearch {
    host => "localhost"
    index_type => "logs-%{[kubernetes][labels][app]}"
  }

I am using above configuration in logstash Helm chat values.yml file for OKD setup.
filebeat ->logstash ->ES
Some logs are creating indices and some are creating data streams
But i want all are indices only.
Can you please help. Thank you.