Shipping Service conditionally related to other service

{ "commerce_shipping_service_free_shipping" : {
    "LABEL" : "Rate Free Shipping",
    "PLUGIN" : "rule",
    "REQUIRES" : [ "rules", "commerce_shipping" ],
    "USES VARIABLES" : { "commerce_order" : { "label" : "Order", "type" : "commerce_order" } },
    "IF" : [
      { "NOT data_is" : {
          "data" : [ "commerce-order:commerce-order-total:amount" ],
          "op" : "\u003C",
          "value" : "9999"
        }
      },
      { "commerce_shipping_compare_shipping_service" : {
          "commerce_order" : [ "commerce_order" ],
          "service" : "express_shipping"
        }
      }
    ],
    "DO" : [
      { "commerce_shipping_service_rate_order" : {
          "shipping_service_name" : "free_shipping",
          "commerce_order" : [ "commerce-order" ]
        }
      }
    ]
  }
}