Hi Hesam, For a general tutorial on how to change dimensions, you can have a look here: https://knowledge.autodesk.com/support/revit-products/learn-explore/caas/CloudHelp/cloudhelp/2016/ENU/Revit-DocumentPresent/files/GUID-575DC14F-5571-4BB5-ACF3-991A8F49758F-htm.html . Or if you think there might be something wrong with this file, please let...