hi. i have a problem. i use file field tag to upload a file. i use $name_of_file_field as the variable. when i wrote $name_of_file_field=="none", what i mean is there is no input on it. my localhost, that works fine. but when i upload my pages into webserver, after i update my table, my old file is updated with the new one. but the new one is null. what i want is, if i don't input the new value, the old value is still use, not updated with null/none/empty values. help me.. please thanks, sorry for my english