I need help in a formula that will retain a total from a worksheet on totals when the worksheet driving that total is changed. example, if cell E34 equals 20 then the tally (on another worksheet, same workbook) total will equal 20. But when the amount (in E34) is changed to 10 the tally total will equal 10, I want it to equal 30 (retain the amount from previous entry). This is to track running totals. thanks, busman