Update virtual-machine-scale-sets-health-extension.md

Author: hilaryw29

articles/virtual-machine-scale-sets/virtual-machine-scale-sets-health-extension.md

@@ -284,6 +284,8 @@ POST on `/subscriptions/<subscriptionId>/resourceGroups/<myResourceGroup>/provid
 
 Use the [Add-AzVmssExtension](/powershell/module/az.compute/add-azvmssextension) cmdlet to add the Application Health extension to the scale set model definition.
 
+Update extension functionality is currently not available on Powershell. To switch between Binary and Rich Health States, you can update the extension version using Azure CLI or REST API commands. 
+
 The following example adds the Application Health extension to the `extensionProfile` in the scale set model of a Windows-based scale set. The example uses the new Az PowerShell module.
 
 ```azurepowershell-interactive
@@ -409,6 +411,8 @@ POST on `/subscriptions/<subscriptionId>/resourceGroups/<myResourceGroup>/provid
 
 Use the [Add-AzVmssExtension](/powershell/module/az.compute/add-azvmssextension) cmdlet to add the Application Health extension to the scale set model definition.
 
+Update extension functionality is currently not available on Powershell. To switch between Binary and Rich Health States, you can update the extension version using Azure CLI or REST API commands. 
+
 The following example adds the **Application Health - Rich States** extension to the `extensionProfile` in the scale set model of a Windows-based scale set. The example uses the new Az PowerShell module.
 
 ```azurepowershell-interactive