I looked into this more and it would appear that you would need to go into code to achieve that right now. It sounds like the trigger system that you are using may be the way to go. From :
It’s currently not supported out of
the box and would require some C++
coding. You can however implement a
kind of jumping behavior with navlinks
and triggers. Navigation links tells
AI “you can traverse this segment”, so
if you place a link between two
platforms AI will find a path as
expected. You just need to take care
of the jumping part, and you can
“fake” it by placing a trigger on the
link start that will make AI move to
the other end.Making “AI move” could be done in
couple of ways: you can simply
teleport your AI, matinee-animate him,
or set his physics to Flying and just
let him continue (should work, but I
haven’t tried it ). If using the
flying option don’t forget to turn
Walking back on once “jump” is done