diff --git a/Customer.php b/Customer.php
index 03ac184..bd31423 100644
--- a/Customer.php
+++ b/Customer.php
@@ -1,23 +1,17 @@
 <?php
-include './Human.php';
-
-class Customer extends Human
-{ }
-
-echo "<title>PHP OOP Sandbox </title>";
-const BR = "<br>";
-
-
-
+include './User.php';
 
+class Customer extends User
+{
+    var $customer_type;
+}
 
 
 $kamal = new Customer;
 $kamal->frist_name = "Kamal";
 $kamal->second_name = "Farouk";
-$kamal->birth_date['d'] = 23;
-$kamal->birth_date['m'] = 7;
-$kamal->birth_date['y'] = 1992;
+$kamal->username = "kfarouk";
+$kamal->email = "kamalfarouk@mail.sd";
 
 echo $kamal->full_name() . BR;
 
@@ -25,4 +19,3 @@ class Customer extends Human
 // $omer->frist_name = "Omer";
 // $omer->second_name = "Ali";
 // echo $omer->full_name() . BR;
-
diff --git a/Human.php b/Human.php
index 6bcc69b..ffb3e14 100644
--- a/Human.php
+++ b/Human.php
@@ -1,4 +1,7 @@
 <?php
+echo "<title>PHP OOP Sandbox </title>";
+const BR = "<br>";
+
 class Human
 {
     var $first_name;
@@ -16,4 +19,3 @@ function age()
         return "";
     }
 }
-
diff --git a/User.php b/User.php
new file mode 100644
index 0000000..8982f50
--- /dev/null
+++ b/User.php
@@ -0,0 +1,9 @@
+<?php
+include './Human.php';
+
+class User extends Human
+{
+    var $username;
+    var $email;
+    var $password;
+}