diff --git a/dotnet/IEC61850forCSharp/IEC61850ServerAPI.cs b/dotnet/IEC61850forCSharp/IEC61850ServerAPI.cs
index b0d2c054..97adae02 100644
--- a/dotnet/IEC61850forCSharp/IEC61850ServerAPI.cs
+++ b/dotnet/IEC61850forCSharp/IEC61850ServerAPI.cs
@@ -2247,6 +2247,10 @@ namespace IEC61850
             static extern void IedServer_handleWriteAccessForComplexAttribute(IntPtr self, IntPtr dataAttribute,
                 InternalWriteAccessHandler handler, IntPtr parameter);
 
+            [DllImport("iec61850", CallingConvention = CallingConvention.Cdecl)]
+            static extern void IedServer_handleWriteAccessForDataObject(IntPtr self, IntPtr dataObject, int fc,
+                InternalWriteAccessHandler handler, IntPtr parameter);
+
             public delegate void ConnectionIndicationHandler(IedServer iedServer, ClientConnection clientConnection, bool connected, object parameter);
 
             private ConnectionIndicationHandler connectionHandler = null;
@@ -2713,12 +2717,27 @@ namespace IEC61850
                 }
             }
 
+            private void AddHandlerInfoForDataObjectRecursive(DataObject dataObject, FunctionalConstraint fc, WriteAccessHandler handler, object parameter, InternalWriteAccessHandler internalHandler)
+            {
+                foreach (ModelNode child in dataObject.GetChildren())
+                {
+                    if (child is DataAttribute && (child as DataAttribute).FC == fc)
+                    {
+                        AddHandlerInfoForDataAttributeRecursive(child as DataAttribute, handler, parameter, internalHandler);
+                    }
+                    else if (child is DataObject)
+                    {
+                        AddHandlerInfoForDataObjectRecursive(child as DataObject, fc, handler, parameter, internalHandler);
+                    }
+                }
+            }
+
             /// <summary>
             /// Install a WriteAccessHandler for a data attribute and for all sub data attributes
             /// </summary>
             /// This instructs the server to monitor write attempts by MMS clients to specific
-            /// data attributes.If a client tries to write to the monitored data attribute the
-            /// handler is invoked.The handler can decide if the write access will be allowed
+            /// data attributes. If a client tries to write to the monitored data attribute the
+            /// handler is invoked. The handler can decide if the write access will be allowed
             /// or denied.If a WriteAccessHandler is set for a specific data attribute - the
             /// default write access policy will not be performed for that data attribute.
             /// <remarks>
@@ -2738,6 +2757,27 @@ namespace IEC61850
                 IedServer_handleWriteAccessForComplexAttribute(self, dataAttr.self, internalHandler, IntPtr.Zero);
             }
 
+            /// <summary>
+            /// Install a WriteAccessHandler for a data object and for all sub data objects and sub data attributes that have the same functional constraint
+            /// </summary>
+            /// This instructs the server to monitor write attempts by MMS clients to specific
+            /// data attributes. If a client tries to write to the monitored data attribute the
+            /// handler is invoked. The handler can decide if the write access will be allowed
+            /// or denied. If a WriteAccessHandler is set the
+            /// default write access policy will not be performed for the matching data attributes.
+            /// <param name="dataObject">the data object to monitor</param>
+            /// <param name="fc">the functional constraint (FC) to monitor</param>
+            /// <param name="handler">the callback function that is invoked if a client tries to write to a monitored data attribute that is a child of the data object.</param>
+            /// <param name="parameter">a user provided parameter that is passed to the WriteAccessHandler when called.</param>
+            public void HandleWriteAccessForDataObject(DataObject dataObj, FunctionalConstraint fc, WriteAccessHandler handler, object parameter)
+            {
+                InternalWriteAccessHandler internalHandler = new InternalWriteAccessHandler(WriteAccessHandlerImpl);
+
+                AddHandlerInfoForDataObjectRecursive(dataObj, fc, handler, parameter, internalHandler);
+
+                IedServer_handleWriteAccessForDataObject(self, dataObj.self, (int)fc, internalHandler, IntPtr.Zero);
+            }
+
             /// <summary>
             /// Set the defualt write access policy for a specific FC. The default policy is applied when no handler is installed for a data attribute
             /// </summary>