أنشئ حسابًا أو سجّل الدخول للانضمام إلى مجتمعك المهني.
for any one concerned I have found the answer " You Need to Download Revit Library ( RAC2013 ) Fromhttp://www.arab-eng.org/vb/t368384.html And Put It At The Following Path C:\\ProgramData\\Autodesk "