{
   "storagePrefix": {
      "type": "String",
      "metadata": {
         "displayName": "Storage Account Prefix for Regional Storage Account"
      }
   },
   "rgName": {
      "type": "String",
      "metadata": {
         "displayName": "Resource Group Name for Storage Account (must exist)",
         "description": "This resource group must already exist",
         "strongType": "ExistingResourceGroups"
      }
   }
}