diff --git a/specification/compute/resource-manager/Microsoft.Compute/stable/2018-04-01/examples/VirtualMachineRunCommand.json b/specification/compute/resource-manager/Microsoft.Compute/stable/2018-04-01/examples/VirtualMachineRunCommand.json
index 74e5012a37c5..18067848da32 100644
--- a/specification/compute/resource-manager/Microsoft.Compute/stable/2018-04-01/examples/VirtualMachineRunCommand.json
+++ b/specification/compute/resource-manager/Microsoft.Compute/stable/2018-04-01/examples/VirtualMachineRunCommand.json
@@ -12,20 +12,22 @@
   },
   "responses": {
     "200": {
-      "body": [
-        {
-          "code": "ComponentStatus/StdOut/succeeded",
-          "level": "Info",
-          "displayStatus": "Provisioning succeeded",
-          "message": "This is a sample script with parameters value1 value2"
-        },
-        {
-          "code":"ComponentStatus/StdErr/succeeded",
-          "level":"Info",
-          "displayStatus":"Provisioning succeeded",
-          "message":""
-        }
-      ]
+      "body": {
+        "value": [
+          {
+            "code": "ComponentStatus/StdOut/succeeded",
+            "level": "Info",
+            "displayStatus": "Provisioning succeeded",
+            "message": "This is a sample script with parameters value1 value2"
+          },
+          {
+            "code": "ComponentStatus/StdErr/succeeded",
+            "level": "Info",
+            "displayStatus": "Provisioning succeeded",
+            "message": ""
+          }
+        ]
+      }
     },
     "202": {
       "body": ""
diff --git a/specification/compute/resource-manager/Microsoft.Compute/stable/2018-04-01/runCommands.json b/specification/compute/resource-manager/Microsoft.Compute/stable/2018-04-01/runCommands.json
index 6f1486ec04df..747038cae783 100644
--- a/specification/compute/resource-manager/Microsoft.Compute/stable/2018-04-01/runCommands.json
+++ b/specification/compute/resource-manager/Microsoft.Compute/stable/2018-04-01/runCommands.json
@@ -43,7 +43,7 @@
         ],
         "operationId": "VirtualMachineRunCommands_List",
         "x-ms-examples": {
-            "VirtualMachineRunCommandList": { "$ref": "./examples/VirtualMachineRunCommandList.json" }
+          "VirtualMachineRunCommandList": { "$ref": "./examples/VirtualMachineRunCommandList.json" }
         },
         "description": "Lists all available run commands for a subscription in a location.",
         "parameters": [
@@ -82,7 +82,7 @@
         ],
         "operationId": "VirtualMachineRunCommands_Get",
         "x-ms-examples": {
-            "VirtualMachineRunCommandGet": { "$ref": "./examples/VirtualMachineRunCommandGet.json" }
+          "VirtualMachineRunCommandGet": { "$ref": "./examples/VirtualMachineRunCommandGet.json" }
         },
         "description": "Gets specific run command for a subscription in a location.",
         "parameters": [
@@ -125,7 +125,7 @@
         ],
         "operationId": "VirtualMachines_RunCommand",
         "x-ms-examples": {
-            "VirtualMachineRunCommand": { "$ref": "./examples/VirtualMachineRunCommand.json" }
+          "VirtualMachineRunCommand": { "$ref": "./examples/VirtualMachineRunCommand.json" }
         },
         "description": "Run command on the VM.",
         "parameters": [
@@ -163,10 +163,7 @@
           "200": {
             "description": "OK",
             "schema": {
-              "type": "array",
-              "items": {
-                "$ref": "#/definitions/InstanceViewStatus"
-              }
+              "$ref": "#/definitions/RunCommandResult"
             }
           },
           "202": {
@@ -175,7 +172,69 @@
         },
         "x-ms-long-running-operation": true,
         "x-ms-long-running-operation-options": {
-          "final-state-via":"location"
+          "final-state-via": "location"
+        }
+      }
+    },
+    "/subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.Compute/virtualMachineScaleSets/{vmScaleSetName}/virtualmachines/{instanceId}/runCommand": {
+      "post": {
+        "tags": [
+          "VirtualMachineScaleSetVMs"
+        ],
+        "operationId": "VirtualMachineScaleSetVMs_RunCommand",
+        "description": "Run command on a virtual machine in a VM scale set.",
+        "parameters": [
+          {
+            "name": "resourceGroupName",
+            "in": "path",
+            "required": true,
+            "type": "string",
+            "description": "The name of the resource group."
+          },
+          {
+            "name": "vmScaleSetName",
+            "in": "path",
+            "required": true,
+            "type": "string",
+            "description": "The name of the VM scale set."
+          },
+          {
+            "name": "instanceId",
+            "in": "path",
+            "required": true,
+            "type": "string",
+            "description": "The instance ID of the virtual machine."
+          },
+          {
+            "name": "parameters",
+            "in": "body",
+            "required": true,
+            "schema": {
+              "$ref": "#/definitions/RunCommandInput"
+            },
+            "description": "Parameters supplied to the Run command operation."
+          },
+          {
+            "$ref": "#/parameters/ApiVersionParameter"
+          },
+          {
+            "$ref": "#/parameters/SubscriptionIdParameter"
+          }
+        ],
+        "responses": {
+          "200": {
+            "description": "OK",
+            "schema": {
+              "$ref": "#/definitions/RunCommandResult"
+            }
+          },
+          "202": {
+            "description": "Accepted"
+          }
+        },
+        "x-ms-long-running-operation": true,
+        "x-ms-long-running-operation-options": {
+          "final-state-via": "location"
         }
       }
     }
@@ -336,24 +395,6 @@
       ],
       "description": "The List Virtual Machine operation response."
     },
-    "RunCommandResultProperties": {
-      "properties": {
-        "output": {
-          "type": "object",
-          "description": "Operation output data (raw JSON)"
-        }
-      },
-      "description": "Compute-specific operation properties, including output"
-    },
-    "RunCommandResult": {
-      "properties": {
-        "properties": {
-          "x-ms-client-flatten": true,
-          "$ref": "#/definitions/RunCommandResultProperties"
-        }
-      },
-      "description": "Run command operation response."
-    },
     "InstanceViewStatus": {
       "properties": {
         "code": {
@@ -388,6 +429,17 @@
         }
       },
       "description": "Instance view status."
+    },
+    "RunCommandResult": {
+      "properties": {
+        "value": {
+          "type": "array",
+          "items": {
+            "$ref": "#/definitions/InstanceViewStatus"
+          },
+          "description": "Run command operation response."
+        }
+      }
     }
   },
   "parameters": {