Any way to let a unit carry an order out ONCE?

I've been wondering if theres a way to make a unit carry an order out, in my case "Attack-Ground" once, than stop. I cant find any actions besides "unit is issued an order targeting a poit", which wont help much, even fit this case. Im using the latest version of WEU if that matters. Ive been thinking about this for a good while, but I dont see how it could be done. Knowing me, its probally insanly easy and I just missed it (or I atleast hope so) JASS or GUI, it doesnt really matter to me.

Event
Unit is issued an order with no target

Should be what you're looking for :). Infact, the base order it comes with is Order( stop ) :P.