diff --git a/csla_binary/binary_writer.py b/csla_binary/binary_writer.py
index 8ce4815..7c0b516 100644
--- a/csla_binary/binary_writer.py
+++ b/csla_binary/binary_writer.py
@@ -82,17 +82,37 @@ class CslaBinaryWriter:
 	
 	def write_object(self, value):
 		# CslaBinaryWriter.Write(...)
-		raise NotImplementedError('Writing objects of dynamic type is not yet implemented')
+		if isinstance(value, bool):
+			return self.write_object_bool(value)
+		
+		if isinstance(value, bytes):
+			return self.write_object_bytearray(value)
+		
+		if isinstance(value, str):
+			return self.write_object_string(value)
+		
+		raise NotImplementedError('CslaBinaryWriter.Write not implemented for type {}'.format(type(value).__name__))
 	
 	def write_object_bool(self, value):
 		# CslaBinaryWriter.Write(bool)
 		self.stream.write(bytes([CslaKnownTypes.Boolean.value, 1 if value else 0]))
 	
+	def write_object_bytearray(self, value):
+		# CslaBinaryWriter.Write(byte[])
+		self.stream.write(bytes([CslaKnownTypes.ByteArray.value]))
+		self.write_int32(len(value))
+		self.stream.write(value)
+	
 	def write_object_int32(self, value):
 		# CslaBinaryWriter.Write(int)
 		self.stream.write(bytes([CslaKnownTypes.Int32.value]))
 		self.write_int32(value)
 	
+	def write_object_string(self, value):
+		# CslaBinaryWriter.Write(string)
+		self.stream.write(bytes([CslaKnownTypes.String.value]))
+		self.write_string(value)
+	
 	def write_object_system_string(self, value):
 		# CslaBinaryWriter.WriteSystemString
 		if value in self.keywords_dictionary: