diff --git a/Source/Tools/Flax.Build/Bindings/BindingsGenerator.CSharp.cs b/Source/Tools/Flax.Build/Bindings/BindingsGenerator.CSharp.cs
index 65fa1c6f7..d3d6eb0f6 100644
--- a/Source/Tools/Flax.Build/Bindings/BindingsGenerator.CSharp.cs
+++ b/Source/Tools/Flax.Build/Bindings/BindingsGenerator.CSharp.cs
@@ -583,8 +583,9 @@ namespace Flax.Build.Bindings
                 var useCustomDelegateSignature = false;
                 for (var i = 0; i < paramsCount; i++)
                 {
-                    var result = GenerateCSharpNativeToManaged(buildData, eventInfo.Type.GenericArgs[i], classInfo);
-                    if (result[result.Length - 1] == '*')
+                    var paramType = eventInfo.Type.GenericArgs[i];
+                    var result = GenerateCSharpNativeToManaged(buildData, paramType, classInfo);
+                    if ((paramType.IsRef && !paramType.IsConst && paramType.IsPod(buildData, classInfo)) || result[result.Length - 1] == '*')
                         useCustomDelegateSignature = true;
                     CppParamsWrappersCache[i] = result;
                 }
@@ -596,8 +597,11 @@ namespace Flax.Build.Bindings
                     contents.Append(indent).Append("public delegate void ").Append(eventInfo.Name).Append("Delegate(");
                     for (var i = 0; i < paramsCount; i++)
                     {
+                        var paramType = eventInfo.Type.GenericArgs[i];
                         if (i != 0)
                             contents.Append(", ");
+                        if (paramType.IsRef && !paramType.IsConst && paramType.IsPod(buildData, classInfo))
+                            contents.Append("ref ");
                         contents.Append(CppParamsWrappersCache[i]).Append(" arg").Append(i);
                     }
                     contents.Append(");").AppendLine().AppendLine();
@@ -668,9 +672,12 @@ namespace Flax.Build.Bindings
                 contents.Append($"void Internal_{eventInfo.Name}_Invoke(");
                 for (var i = 0; i < paramsCount; i++)
                 {
+                    var paramType = eventInfo.Type.GenericArgs[i];
                     if (i != 0)
                         contents.Append(", ");
                     contents.Append(CppParamsWrappersCache[i]);
+                    if (paramType.IsRef && !paramType.IsConst && paramType.IsPod(buildData, classInfo))
+                        contents.Append("*");
                     contents.Append(" arg").Append(i);
                 }
                 contents.Append(')').AppendLine();
@@ -679,8 +686,11 @@ namespace Flax.Build.Bindings
                 contents.Append('(');
                 for (var i = 0; i < paramsCount; i++)
                 {
+                    var paramType = eventInfo.Type.GenericArgs[i];
                     if (i != 0)
                         contents.Append(", ");
+                    if (paramType.IsRef && !paramType.IsConst && paramType.IsPod(buildData, classInfo))
+                        contents.Append("ref *");
                     contents.Append("arg").Append(i);
                 }
                 contents.Append(");").AppendLine();
diff --git a/Source/Tools/Flax.Build/Bindings/BindingsGenerator.Cpp.cs b/Source/Tools/Flax.Build/Bindings/BindingsGenerator.Cpp.cs
index 721e58347..16ef34de8 100644
--- a/Source/Tools/Flax.Build/Bindings/BindingsGenerator.Cpp.cs
+++ b/Source/Tools/Flax.Build/Bindings/BindingsGenerator.Cpp.cs
@@ -73,7 +73,7 @@ namespace Flax.Build.Bindings
             return sb.ToString();
         }
 
-        private static string GenerateCppWrapperNativeToManagedParam(BuildData buildData, StringBuilder contents, TypeInfo paramType, string paramName, ApiTypeInfo caller)
+        private static string GenerateCppWrapperNativeToManagedParam(BuildData buildData, StringBuilder contents, TypeInfo paramType, string paramName, ApiTypeInfo caller, bool isOut)
         {
             var nativeToManaged = GenerateCppWrapperNativeToManaged(buildData, paramType, caller, out var managedTypeAsNative, null);
             string result;
@@ -96,7 +96,12 @@ namespace Flax.Build.Bindings
             else
             {
                 result = paramName;
-                if (paramType.IsPtr || managedTypeAsNative[managedTypeAsNative.Length - 1] == '*')
+                if (paramType.IsRef && !paramType.IsConst && !isOut)
+                {
+                    // Pass reference as a pointer
+                    result = '&' + result;
+                }
+                else if (paramType.IsPtr || managedTypeAsNative[managedTypeAsNative.Length - 1] == '*')
                 {
                     // Pass pointer value
                 }
@@ -1038,7 +1043,7 @@ namespace Flax.Build.Bindings
             for (var i = 0; i < functionInfo.Parameters.Count; i++)
             {
                 var parameterInfo = functionInfo.Parameters[i];
-                var paramValue = GenerateCppWrapperNativeToManagedParam(buildData, contents, parameterInfo.Type, parameterInfo.Name, classInfo);
+                var paramValue = GenerateCppWrapperNativeToManagedParam(buildData, contents, parameterInfo.Type, parameterInfo.Name, classInfo, parameterInfo.IsOut);
                 contents.Append($"        params[{i}] = {paramValue};").AppendLine();
             }
 
@@ -1295,7 +1300,7 @@ namespace Flax.Build.Bindings
                 {
                     var paramType = eventInfo.Type.GenericArgs[i];
                     var paramName = "arg" + i;
-                    var paramValue = GenerateCppWrapperNativeToManagedParam(buildData, contents, paramType, paramName, classInfo);
+                    var paramValue = GenerateCppWrapperNativeToManagedParam(buildData, contents, paramType, paramName, classInfo, false);
                     contents.Append($"        params[{i}] = {paramValue};").AppendLine();
                 }
                 if (eventInfo.IsStatic)