Anyway to block flying units going over other units (Without path blockers)

is there Anyway I can set it so you cant walk over "gates" when your movement type is flying,
Problem, In order to use jumps in escape makers, you require the movement type "Flying", now, if your movement type is flying, you can move straight over gates, sadly, My gates work now, but i've encountered this?

Is there a way to block flying units from moving over gates? no?

Is there a way to change a units movement type? so when you come within range of a jump, I can add "flying movement" to the unit, and remove it after, so gates would work & jumps also

Im in a bad predicament here, No jumps, means i'd have to use waygates for teleporting, which I dont know how to do:/ and its less fun
No gates, well I need gates :/ not sure what to do? can anyone give me a solution?

Just make all units ground and use the raven form trick to make them able to 'fly'.
That way they still take ground pathing.

AKA:
Add raven form and then immediately remove it from units in question.

Woot! THANKS HEAPS! you pwn +rep :)