Units colliding with another.

I'm having a problem in maps with units colliding with another, having hard times getting themselves to regions because of this.

Their collision size is set to 0, yet they still collide with each other. I see maps like Tower Wars where 50 units could be occupying the same space. How is this accomplished?

Either you base everything on flying (make a custom unit based one a flying unit then set all your properties)... Oooor... You turn collision size off, with a trigger.
Unit - Enable/Disable collision size.

Turning collision off seemed to somewhat resolve the problem with regions, although when crossing each other, they'll still stop.. *sighs*

But they can still move through each other, right? You could just keep ordering them to move every second or so.

Off note, a spell that altered collision size would be cool to somehow make, so your guy can escape being surrounded (besides blink, but tft isnt here yet ;))

Its strange, they will occupy the same space, when when 2 units cross the path of each other they will collide, and stop for a second. arrgh!

Then try setting their normal collision size to 1 or 2 and turning it off later with the skill. I've tried it with my TD map and it worked correctly....

I seem to have fixed the problem.. Thanks for your help guys.