I want to see this get solved aswell,after looking at what TheNewGuy is saying and the links he provided there is no practical way to get that feature.
Im sure it isnt ment to be this hard to make your player JUMP out of all things.
I think that jump should be implemented into the main behaviour by the developers and i cant see why they wouldnt want to do so.
It would benefit isometric game makers abroad.
I myself am working on a game similar to Glitch and i would love to know this information also.
I think that higher beings are needed though.
Is it possible to implemnt this feature into the 8 Direction Behaviour?
Its almost a must for most 2.5D Games and involves a good bit of trickery from what i have seen.