From Vectorworks Developer
.VectorScript|VectorScript ..VS:Function Reference|Function Reference ..VS:Function_Reference_Appendix|Appendix
DescriptionCreates a Wall Feature in the wall from the profile object. The Wall Feature can be a projection from the wall or a recess in the wall.
wallFeatureType :INTEGER) : HANDLE;
def vs.CreateWallFeature(wall, profile, wallFeatureType): return HANDLE
wall HANDLE The handle to the wall in which to create the Wall Feature. profile HANDLE The handle to the object to use as the Wall Feature profile. wallFeatureType INTEGER The Wall Feature type.