Move to One of 2 regions randomly

I have a path up the middle and a region each side... What i wanna know how to do is set up a trigger so when an enemy unit enters a specific place it moves it instantly to one of the 2 regions.. not the same one everytime. And i cant make it one big region cause that would go over the path and have units respawn on the path. Any way to do this? thanks

set randomnumber=random number between 1 and 100
if randomnumber<50 then
move unit to region 1
else
move unit to region 2

i use a number between 1 and 100 because it sets up a percent. if you use 50 you get 50% if you use 25 you get 25% going to region 1. I hope that answers your question.

Thanks thats exactly what i wanted.