I am probably as confused as fpspreadsheet on this data entry: What kind of data do you want to enter? Is it a date? Then it depends on the format settings of your system which number is taken as year, month, or day, or set the ShortDateString of the workbook's FormatSettings correctly. Or is it a fraction? Then you should use a space to split off the integer part of the number (i.e. "55 12/12").