Unable to change the replication factor in elasticsearch 6.8

Hi,

Trying to change the replication factor for indices on 3 node elasticsearch 6.8 cluster from 1 to 2.
Getting errors on the server.

below is the GET result for settings.

curl -XGET http://127.0.0.1:9200/janusgraph/_settings?pretty

  "janusgraph_v1_id" : {
    "settings" : {
      "index" : {
        "number_of_shards" : "4",
        "provided_name" : "janusgraph_v1_id",
        "max_result_window" : "2147483647",
        "creation_date" : "1592906378156",
        "number_of_replicas" : "1",
        "uuid" : "PE5hEjvNRs2FLqrBPrrrr",
        "version" : {
          "created" : "6080499"
        }
      }
    }
  },
  "janusgraph_v1_cronym" : {
    "settings" : {
      "index" : {
        "number_of_shards" : "4",
        "provided_name" : "janusgraph_v1_acronym",
        "max_result_window" : "2147483647",
        "creation_date" : "1592906878878",
        "number_of_replicas" : "1",
        "uuid" : "g_f7j2ywQC2GJA2-L89888",
        "version" : {
          "created" : "6080499"
        }
      }
    }
  }
}

trying to change using below command and getting below errors. Any thoughts what i am missing here.

curl -XPUT http://127.0.0.1:9200/janusgraph/_settings{"index" : {"number_of_replicas" :2}}
curl: (3) [globbing] unmatched brace at pos 49
curl: (6) Could not resolve host: ; Name or service not known
curl: (3) [globbing] unmatched brace at pos 20
curl: (3) [globbing] unmatched close brace/bracket at pos 3

please suggest.

Thanks,
Sunny

Never mind. Ignore this request, figured it out and able to change the replication factor.