def METHOD_NAME(self, _target, _failure_condition, _failure_script, _success_condition,
                               _success_script):
    for event_target in self.event_targets:
        if event_target.target == _target:
            event_target.failure_condition = _failure_condition
            event_target.failure_script = _failure_script
            event_target.success_condition = _success_condition
            event_target.success_script = _success_script
        else:
            self.event_targets.append(ScriptedEventTarget(_target, _failure_condition, _failure_script,
                                                          _success_condition, _success_script))