set unit flying height help

set unit flying height help

how does Set Unit Fly Height works? cause when i use the trigger action, nothing happens. i use it on a flying unit, but it doesn't seem to do anything. i also tried SetUnitFlyHeight() in jass, but it's the same. or is it neccesary to give StrormCrowForm to the unit? i have no idea why it doesn't work...

and also what does "rate" in the action refer to? you must add 3 arguments, unit, height, and rate.

just add and remove the crow form ability tro every unit u want to change the flying height. the rate is for how fast it should fly to the height u filled in