[alamwuhk2a]

I've set the tanks cannot crush the trees(Crusherlevel = 1)
But the thanks just go through the trees.

How can i set the tanks that go away from trees if the tree is on their way?

[Flyby]

It is by no means fail safe, as sometimes even units pass through eachother, but try fiddling with the geometry settings of the trees.

[SmokeyDaBear]

yea...amke the tree's geometry setting bigger...and also...you might wanna look into structure geometry...

[Airstriker]

Set "GeometryIsSmall" to "No". It tells the computer that nothing can go through the geometry, unless it was spawned in there.