Hope some one has a good idea and can help

I have a workbook there only have one sheet in this sheet i have a order
number
what i do now is copy this sheet into my open workbook then i take the number
and make a new number like number+1 its working all right but now i want to
copy the sheet back again so the new number come to the original sheet

Or maybe there is a nother way ??

The only thing i want to do is to see the number and change it with number+1

regards alvin