Hello Seiquo,

A few points:
- the file path is for the second spreadsheet (with 43 numbers)
- not sure about which "whatif" you have added - is that the color change?
- when you get the error - do you know which exact line causes it?

try to step through the code by placing a breakpoint (click on any line and hit F9 function key) and then to move to the next line - F8 - or just use the menus - then it will be easier to identify the cause of your problem