@ -47,6 +47,7 @@ module DFHack
bld = cls.cpp_new
bld.race = ui.race_id
subtype = WorkshopType.int(subtype) if subtype.kind_of?(::Symbol) and type == :Workshop
subtype = FurnaceType.int(subtype) if subtype.kind_of?(::Symbol) and type == :Furnace
bld.setSubtype(subtype) if subtype != -1
bld.setCustomType(custom) if custom != -1
case type