diff --git a/script/RobotTCP.py b/script/RobotTCP.py
index 3d07388..adf9930 100644
--- a/script/RobotTCP.py
+++ b/script/RobotTCP.py
@@ -86,7 +86,7 @@ class RobotTCP(TcpDevice, Stoppable):
 
     def get_int_arr(self, size, name="tcp_a"):
         # not working. A Jython bug in PyUnicaode?
-        #return [int(x) for x in self.get_arr("tcp_arr", size)] 
+        #return [int(x) for x in self.get_arr("tcp_a", size)] 
         ret = []
         a=self.get_arr(name, size)
         for i in range(size):
@@ -94,7 +94,7 @@ class RobotTCP(TcpDevice, Stoppable):
         return ret
 
     def get_float_arr(self, size, name="tcp_a"):
-        #return [float(x) for x in self.get_arr("tcp_arr", size)]        
+        #return [float(x) for x in self.get_arr("tcp_a", size)]        
         a=self.get_arr(name, size)
         ret = []; 
         for i in range(size): ret.append(float(a[i])); 
@@ -247,7 +247,7 @@ class RobotTCP(TcpDevice, Stoppable):
 
     def get_joint_forces(self):        
         try:
-            self.evaluate("getJointForce(arr)")        
+            self.evaluate("getJointForce(tcp_a)")        
             self.joint_forces = self.get_float_arr(6)            
             return self.joint_forces
         except: