Store mode on hyperion duo ii question

Hey guys i got a hyperion 610 duo charger recently and im having trouble with the store function. What i want it to do is be able to either charge or discharge the lipos to 60% capacity. what its doing is it will just fully charge the pack. From what i read its suppose to be able to discharge or charge to a safe storing capacity but im just having trouble making it work. any ideas would be greatly appreciated!