The following formula was created to sum a variable number of values in row 3 of Book1, Sheet1, starting at column A:
However, the formula only works correctly when Book1 is open.
When Book1 is closed, the formula returns #VALUE!.
How can we modify the formula so that it works regardless of whether Workbook1 is open or not?
Use the SUM, COLUMN, and INDIRECT functions as shown in the following Array formula:
IF(ISNUMBER(‘C:\My Documents\[Book1.xls]Sheet1′!$A$3:$Z$3),’C:\My Documents\[Book1.xls]Sheet1′!$A$3:$Z$3))}
The applications/code on this site are distributed as is and without warranties or liability. In no event shall the owner of the copyrights, or the authors of the applications/code be liable for any loss of profit, any problems or any damage resulting from the use or evaluation of the applications/code.