Excel read and write

[Omnom]

Hi guys, i am trying to add first and second column of an excel sheet and i want to write it to the third column of the same sheet. Anyway, i managed to do it, it worked. However, it gives error now. What are the possible reasons for that?

[Bob_Schor]

Please see my reply on 8/10 to your identical post (here's a link if you can't remember posting it ).  I critiqued your code, told you how to fix it (you are writing code that suggests you've never gotten any instruction in LabVIEW, and have never viewed the on-line Tutorials).  I even talked you through the simple solution (though you do need to do some of the work ...).

Bob Schor