Oh...sorry, i should have explain more, namebox is the text box on top of column A (at the top left corner), if you select some range of cells, then put a name there, then next time excel will link the name to that particular range that your have selected, however, so far i never find a way to edit the range, i can only create it. but dont know how to edit nor delete.
Usually i seldom use this name box, is just that the previous programmer has use this name box which a lot of function use the namebox, in order to modify the functions one by one, i hope i can edit the range of the namebox.