I know it's not a direct answer of the question, but you can just use instance variables 'goToLevel' on each, and have it:
Touch | On touched subLevelBoard
subLevelBoard | if goToLevel = 0 -> System | Go to Level01a
subLevelBoard | if goToLevel = 1 -> System | Go to Level01
subLevelBoard | if goToLevel = 2 -> System | Go to Level02
etc