Depending on your version of archicad, make a custom property with an orientation flag and manually fill that out (select multiple walls and set things up). You can then schedule this custom property.
I don't think you can schedule a rotation to the project origin / axis.
Erwin Edel, Project Lead, Leloup Architectenwww.leloup.nl
ArchiCAD 9-26NED FULL
Windows 10 Pro
Adobe Design Premium CS5