diff --git a/samples/manage/azure-sql-db-managed-instance/attach-jumpbox/azuredeploy.json b/samples/manage/azure-sql-db-managed-instance/attach-jumpbox/azuredeploy.json
index 28ab99c4..ff12fca4 100644
--- a/samples/manage/azure-sql-db-managed-instance/attach-jumpbox/azuredeploy.json
+++ b/samples/manage/azure-sql-db-managed-instance/attach-jumpbox/azuredeploy.json
@@ -130,7 +130,7 @@
                         "name": "ipconfig1",
                         "properties": {
                             "subnet": {
-                                "id": "[resourceId('Microsoft.Network/virtualNetworks/subnets', parameters('virtualNetworkName'), parameters('managementSubnetName'))]"
+                                "id": "[resourceId('Microsoft.Network/virtualNetworks/subnets', parameters('virtualNetworkName'), variables('managementSubnetName'))]"
                             },
                             "privateIPAllocationMethod": "Dynamic",
                             "publicIpAddress": {