Hi, after creating a structure (object) with append, is it possible to delete it? Or just better hide it with 0 on the drawing objects? (the patch is only to display data, not to be used by the user) João -- Friedenstr. 58 10249 Berlin (Deutschland) Tel +49 30 42020091 | Mob +49 162 6843570 jmmmpais at googlemail.com | skype: jmmmpjmmmp