A1 =4
A2 =5
A3 = =SUM(A1:A2)

##</code><code>##

use Spreadsheet::WriteExcel;
use Spreadsheet::ParseExcel;
use Spreadsheet::ParseExcel::Worksheet;
use Parse::RecDescent;
use Spreadsheet::WriteExcel::Utility;
use Spreadsheet::ParseExcel::SaveParser;
use Spreadsheet::ParseExcel::Cell;