diff --git a/README.md b/README.md
index cf41e43..267d093 100644
--- a/README.md
+++ b/README.md
@@ -21,38 +21,36 @@ Create ZK object and you will ready to call api.
 import zk
 from zk import const
 
+conn = False
 zk = zk.ZK(ip='192.168.1.201', port=4370, timeout=5)
 try:
-    response = zk.connect()
-    if response.get('status') is False:
-        raise Exception(response.get('message'))
+    conn = zk.connect()
 
     # disable (lock) the device, make sure no activity when process run
     zk.disable_device()
 
     # Do another task here
-    firmware = zk.get_firmware_version()
-    print 'Firmware Version: : {}'.format(firmware.get('data'))
+    firmware_version = zk.get_firmware_version()
+    print 'Firmware Version: : {}'.format(firmware_version)
     users = zk.get_users()
-    if users.get('status'):
-        for user in users.get('data'):
-            privilege = 'User'
-            if user.privilege == const.USER_ADMIN:
-                privilege = 'Admin'
+    for user in users:
+        privilege = 'User'
+        if user.privilege == const.USER_ADMIN:
+            privilege = 'Admin'
 
-            print '- UID #{}'.format(user.uid)
-            print '  Name       : {}'.format(user.name)
-            print '  Privilege  : {}'.format(privilege)
-            print '  Password   : {}'.format(user.password)
-            print '  Group ID   : {}'.format(user.group_id)
-            print '  User  ID   : {}'.format(user.user_id)
+        print '- UID #{}'.format(user.uid)
+        print '  Name       : {}'.format(user.name)
+        print '  Privilege  : {}'.format(privilege)
+        print '  Password   : {}'.format(user.password)
+        print '  Group ID   : {}'.format(user.group_id)
+        print '  User  ID   : {}'.format(user.user_id)
 
     # don't forget to re-enable device
     zk.enable_device()
 except Exception, e:
     print "Process terminate : {}".format(e)
 finally:
-    if zk.is_connect:
+    if conn:
         zk.disconnect()
 
 ```