In Intera Mode it's easy to toggle the vacuum on/off by pressing the white "grasp" button. Is there a way to do that in SDK mode? I've tried to publish command to "/io/end_effector/right_vacuum_gripper/command", "/io/end_effector/right_vacuum_gripper/command", and "/robot/digital_io/right_valve_1b/state", but they didn't change the state of the vacuum.