thank you for replying , I'm trying to use the work flow mentioned in the link above to export to UDK but it only works with Sci-Fi building no roads "even Sci-Fi" or other building " modern...etc." get exported , in the script readme it mentions that I've to update the UPK file with assets, how to do that , or is there any other way that automates the exporting from city engine to t3d format with assets of course?