Two editor q's

[Balmong]

Hey guys i decided to start making maps a while ago and did a few basic ones but ive got two question i cant seem to figure out.

1. how do u make the retaining walls that look like cement from one level to another?
2. is there a way to allow units to go under a bridge, ive got a map now that has a bridge and its deep enough that units should go under it but instead they go around?

any help would be great thanks guys

[Nobody]

bridges are solid objects, thats why your units cant pass under (actually it would be through). You can make a bridge where units can pass under, but then they cant pass over ;)