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Hi all, I found the answer. We need to pass the methods in the cb_args[]. E.g. smach.StateMachine.add('STATE1',CBState(self.my_call_back,cn_args=[self.class_method_tobe_called_inside_call_back]......................

Then in the part of @smach.cb_interface(), we need to pass a function name in the input_keys[] E.g. @smach.cb_interface(input_keys['class_method_to_call_inside_callback'])

Then inside the callback simply call the method with the same name as passed in the input keys e.g @smach.cb_interface(input_keys['method_to_call']) **def my_call_back(self,method_to_call): method_to_call()

Hi all, I found the answer. We need to pass the methods in the cb_args[]. E.g. . E.g.

smach.StateMachine.add('STATE1',CBState(
 smach.StateMachine.add('STATE1',CBState(self.my_call_back,cn_args=[self.class_method_tobe_called_inside_call_back]......................
   self.my_call_back,cn_args=[self.class_method_tobe_called_inside_call_back]))

Then in the part of @smach.cb_interface(), we need to pass a function name in the input_keys[] E.g. @smach.cb_interface(input_keys['class_method_to_call_inside_callback'])E.g.

@smach.cb_interface(input_keys['class_method_to_call_inside_callback'])

Then inside the callback simply call the method with the same name as passed in the input keys e.g @smach.cb_interface(input_keys['method_to_call']) **def my_call_back(self,method_to_call):e.g

@smach.cb_interface(input_keys['**method_to_call'**])
def my_call_back(self,method_to_call):
  method_to_call()
method_to_call()