diff --git a/Object-Oriented/6-property-decorator/oop.py b/Object-Oriented/6-property-decorator/oop.py
index 3ba793e0b..09dbbb6fc 100644
--- a/Object-Oriented/6-property-decorator/oop.py
+++ b/Object-Oriented/6-property-decorator/oop.py
@@ -2,28 +2,54 @@
 class Employee:
 
     def __init__(self, first, last):
-        self.first = first
-        self.last = last
+        self.__first = first
+        self.__last = last
+
+    @property
+    def first(self):
+        return self.__first
+
+    @property
+    def last(self):
+        return self.__last
+
+    @first.setter
+    def first(self, first):
+        self.__first = first
+
+    @last.setter
+    def last(self, last):
+        self.__last = last
+
+    @first.deleter
+    def first(self):
+        print('Delete firstname!')
+        self.__first = None
+
+    @last.deleter
+    def last(self):
+        print('Delete lastname!')
+        self.__last = None
 
     @property
     def email(self):
-        return '{}.{}@email.com'.format(self.first, self.last)
+        return '{}.{}@email.com'.format(self.__first, self.__last)
 
     @property
     def fullname(self):
-        return '{} {}'.format(self.first, self.last)
+        return '{} {}'.format(self.__first, self.__last)
     
     @fullname.setter
     def fullname(self, name):
         first, last = name.split(' ')
-        self.first = first
-        self.last = last
+        self.__first = first
+        self.__last = last
     
     @fullname.deleter
     def fullname(self):
         print('Delete Name!')
-        self.first = None
-        self.last = None
+        self.__first = None
+        self.__last = None
 
 
 emp_1 = Employee('John', 'Smith')
@@ -33,4 +59,21 @@ def fullname(self):
 print(emp_1.email)
 print(emp_1.fullname)
 
+print("del emp_1.fullname")
 del emp_1.fullname
+print(emp_1.first)
+print(emp_1.email)
+print(emp_1.fullname)
+
+emp_1.first = "Crazy"
+emp_1.last = "Dave"
+
+print(emp_1.fullname)
+
+del emp_1.first
+
+print(emp_1.fullname)
+
+del emp_1.last
+
+print(emp_1.fullname)