How to change heights

I was wondering why don't my triggers work when I do
, the trigger doesn't do anything why? This happens automaticaly after 10 sec have elapsed in the game.

you need to use it on a flying unit. The first number is the height you wantto change it to, and the second number is the rate at which it moves, so that trigger would take 4 seconds to be visually completed (youd have to put in a wait function if you wanted to do something after its gone up/down)

You need a flying unit, or, an alternative is to use a regular unit and crow form. If you add the Medivh's ability Crow Form to a unit with triggers (and remove it right afterwards), the unit will still be the same ground unit but you will be able to change it's flying height.

I'll try that tnx ^_^