Connect to multiple mongo instances

[Manoharan Rangaswamy]

I have a mongo plugin configured to connect to an instance through the
Drill UI as below

{
  "type": "mongo",
  "connection": "mongodb://host1:27017/",
  "enabled": true
}

Is it possible to setup mongo plugin to connect to multiple mongo
instances? If so, can you please point me to the documentation or example
on how to configure it. I tried to duplicate as below and as soon as I
click "Update", it took only 1 instance.

{
  "type": "mongo",
  "connection": "mongodb://host1:27017/",
  "enabled": true
},
{
  "type": "mongo",
  "connection": "mongodb://host2:27017/",
  "enabled": true
}

Thanks,
Mano