Replacing an ability

In my map, a unit has a spell called stealth which is just windwalk with a cooler name. I want to have it so that when you windwalk, an ability replaces windwalk that is called turn off windwalk. The turn off windwalk spell is just a regular spell that does nothing (using spells, attacking, etc bring you out of windwalk). Anyway, I tried to do that and when I turned on windwalk, it was not replaced, and SOMEHOW my unit could not even move or do anything. It was really wierd. Thanks.

Let me se if i got it, your trying to do a 'deactivate' ability ?

Yes. Im trying to deactivate windwalk...

Well as long as i know, some abilities have the function to deactive (true or false) but as long as i know, there is no way to add a field value :/

Maybe with triggers.

Well, the best I could do was to make an immolation spell that does nothing, and when you cast it a dummy caster cast invisibility on the unit. When you deactivate it you are going to come out of invisibility it hope.

Well check in advance-->gameplay constant i think wind walk candeactive can find it there.

Thanks a lot! Yeah, deactivate windwalk is in there.

Ok, well... I may have found it in the gameplay constants but how to I give a unit the ability to deactivate their windwalk once it is active?

Man once u allow wind walk can deactivate in game play constant then when u active wind walk it will automatically give u an ability name deactivate wind walk if it dont show then go report it to blizzard >_<