diff --git a/script/RobotTCP.py b/script/RobotTCP.py
index 843014d..c1f8525 100644
--- a/script/RobotTCP.py
+++ b/script/RobotTCP.py
@@ -190,7 +190,7 @@ class RobotTCP(TcpDevice):
 
     def poll_events():
         ev = self.read_event()                    
-        if ec is not None:
+        if ev is not None:
             self.getLogger().info(ev)
             on_event(ev)
 
@@ -213,4 +213,4 @@ class RobotTCP(TcpDevice):
 
 add_device(RobotTCP("robot_tcp", "129.129.126.100:1000"), force = True)   
 robot_tcp.setPolling(500)
-robot_tcp.set_monitor_speed(20)
\ No newline at end of file
+#robot_tcp.set_monitor_speed(20)
\ No newline at end of file