Can't update cluster watermarks

Elastic Stack Elasticsearch
7 
curl -XGET "localhost:9200/_cluster/settings?pretty=true"
{
  "persistent" : {
    "archived" : {
      "indices" : {
        "recovery" : {
          "concurrent_streams" : "5"
        }
      }
    },
    "cluster" : {
      "routing" : {
        "allocation" : {
          "node_concurrent_recoveries" : "5",
          "enable" : "none"
        }
      }
    },
    "indices" : {
      "recovery" : {
        "max_bytes_per_sec" : "200mb"
      }
    }
  },
  "transient" : {
    "cluster" : {
      "routing" : {
        "allocation" : {
          "disk" : {
            "watermark" : {
              "low" : "20gb",
              "high" : "10gb"
            }
          },
          "enable" : "all"
        }
      },
      "info" : {
        "update" : {
          "interval" : "1m"
        }
      }
    }
  }
}