I am using the subassembly 'retainwallvertical'. the help file says you can pick 3d polys, feature lines, etc. for targeting of the wall height. yet when i try to select one it is grayed out and I can only add a profile for wall height. It doesnt seem to be working correctly on the footing cover either. i have it set to 0.001 and I am getting about 1.5'. is it possible my alignment may not be directly on top (horz.) where the assembly ends? ideally i would like to select a 3d poly/FL for the wall height. any ideas? are the wall assemblies generally hard to work with?