diff --git a/powershell/llcsharp/model/model-class-serializer.ts b/powershell/llcsharp/model/model-class-serializer.ts
index 7a6e7b4849..d3d653e3cf 100644
--- a/powershell/llcsharp/model/model-class-serializer.ts
+++ b/powershell/llcsharp/model/model-class-serializer.ts
@@ -32,7 +32,8 @@ import { ObjectImplementation } from '../schema/object';
 import { Schema } from '../code-model';
 import { Schema as NewSchema } from '@azure-tools/codemodel';
 
-import { getVirtualPropertyName } from './model-class';
+import { getVirtualPropertyName, NewGetVirtualPropertyName } from './model-class';
+import { VirtualProperty as NewVirtualProperty } from '../../utils/schema';
 
 export class SerializationPartialClass extends Initializer {
   constructor(protected targetClass: Class, protected targetInterface: TypeDeclaration, protected serializationType: TypeDeclaration, protected serializationFormat: string, protected schema: Schema, protected resolver: (s: Schema, req: boolean) => EnhancedTypeDeclaration, objectInitializer?: DeepPartial<SerializationPartialClass>) {
@@ -273,16 +274,16 @@ export class NewDeserializerPartialClass extends NewSerializationPartialClass {
     return function* () {
       yield '// actually deserialize ';
       // skip-for-time-being
-      // for (const virtualProperty of values($this.allVirtualProperties)) {
-      //   // yield `// deserialize ${virtualProperty.name} from ${$this.serializationFormat}`;
-      //   const type = $this.resolver(<Schema>virtualProperty.property.schema, virtualProperty.property.details.default.required);
+      for (const virtualProperty of values(<Array<NewVirtualProperty>>$this.allVirtualProperties)) {
+        // yield `// deserialize ${virtualProperty.name} from ${$this.serializationFormat}`;
+        const type = $this.resolver(<NewSchema>virtualProperty.property.schema, virtualProperty.property.language.default.required);
 
-      //   const cvt = type.convertObjectMethod;
-      //   const t = `((${virtualProperty.originalContainingSchema.details.csharp.fullInternalInterfaceName})this)`;
-      //   const tt = type ? `(${type.declaration})` : '';
+        const cvt = type.convertObjectMethod;
+        const t = `((${virtualProperty.originalContainingSchema.language.csharp?.fullInternalInterfaceName})this)`;
+        const tt = type ? `(${type.declaration})` : '';
 
-      //   yield `${t}.${getVirtualPropertyName(virtualProperty)} = ${tt} ${$this.contentParameter}.GetValueForProperty("${getVirtualPropertyName(virtualProperty)}",${t}.${getVirtualPropertyName(virtualProperty)}, ${cvt});`;
-      // }
+        yield `${t}.${NewGetVirtualPropertyName(virtualProperty)} = ${tt} ${$this.contentParameter}.GetValueForProperty("${NewGetVirtualPropertyName(virtualProperty)}",${t}.${NewGetVirtualPropertyName(virtualProperty)}, ${cvt});`;
+      }
     };
   }
 
diff --git a/powershell/plugins/plugin-tweak-model.ts b/powershell/plugins/plugin-tweak-model.ts
index 2638fb1c93..e58c00aec1 100644
--- a/powershell/plugins/plugin-tweak-model.ts
+++ b/powershell/plugins/plugin-tweak-model.ts
@@ -98,6 +98,7 @@ async function tweakModelV2(state: State): Promise<PwshModel> {
   const universalId = new ObjectSchema(`${serviceName}Identity`, 'Resource Identity');
   universalId.apiVersions = universalId.apiVersions || [];
   state.model.schemas.objects = state.model.schemas.objects || [];
+  (<any>universalId.language.default).uid = 'universal-parameter-type';
   state.model.schemas.objects.push(universalId);
 
   for (const group of values(model.operationGroups)) {
diff --git a/powershell/plugins/ps-namer-v2.ts b/powershell/plugins/ps-namer-v2.ts
index 79b536b8fd..cf926c52af 100644
--- a/powershell/plugins/ps-namer-v2.ts
+++ b/powershell/plugins/ps-namer-v2.ts
@@ -55,7 +55,7 @@ async function tweakModel(state: State): Promise<PwshModel> {
 
   // make sure recursively that every details field has csharp
   for (const { index, instance } of linq.visitor(state.model)) {
-    if (index === 'details' && instance.default && !instance.csharp) {
+    if ((index === 'details' || index === 'language') && instance.default && !instance.csharp) {
       instance.csharp = linq.clone(instance.default, false, undefined, undefined, ['schema', 'origin']);
     }
   }