diff --git a/openapi/csharp.xml b/openapi/csharp.xml
index 487a29f..0172707 100644
--- a/openapi/csharp.xml
+++ b/openapi/csharp.xml
@@ -36,11 +36,13 @@
           <argument>--namespace=${generator.package.name}</argument>
           <argument>--package-version=${generator.client.version}</argument>
           <argument>--output-folder=${generator.output.path}</argument>
-	  <argument>--version=preview</argument>
-	  <argument>--add-credentials</argument>
-	  <argument>--debug</argument>
-	  <argument>--verbose</argument>
+          <argument>--version=preview</argument>
+          <argument>--add-credentials</argument>
+          <argument>--debug</argument>
+          <argument>--verbose</argument>
           <argument>--directive={from: "swagger-document", where: "$..*[?(@.consumes[0] === \"*/*\")]", transform: "$.consumes[0] = \"application/json\""}</argument>
+          <argument>--directive={from: "swagger-document", where: "$.definitions", transform: "$[\"IntOrString\"] = {\"properties\": { \"value\": { \"type\": \"string\" }}}"}</argument>
+          <argument>--directive={from: "swagger-document", where: "$..*[?(@.format === \"int-or-string\")]", transform: "delete $.type; delete $.format; $[\"$ref\"] = \"#/definitions/IntOrString\""}</argument>
           <argument>--use=@microsoft.azure/autorest.csharp@preview</argument>
         </arguments>
       </configuration>