Poser makes a copy of the .obj file and stores it in the Geometries folder for each figure. This file is called the RSR file. If you go into the Runtime->Geometries->P4NudeWoman folder and delete the NudeWoman.rsr file. Poser will then be forced to look at your new .obj file and re-write another .rsr file based on that new one you made. You'll then see the changes that you made. ScottA