[Trigger Noob =]]

I'm currently making an AoS map i have about 12 Roshan-like units that i want to be randomly made at a certain location.

And i want another and a different one spawned after the first dies and another after that one dies and so on and so forth until they all have died. and when they all have died, an even more crazy unit is created at the centre of the map.

I believe i can do that last part when all of them are dead but im not really sure how i would do the random spawning thing.

I've already set the units into a unit-type array and created the trigger for creating the special unit.

But after that i'm basically completely lost.

Can anyone post a sample trigger or point me in the right direction ?

Thanks

Trigger Noob =]