COUNTIFS( range1, criterion1, [ range2, criterion2... ])
OK, I'm stuck. When using COUNTIFS, and both ranges only cover 1 column each, or both ranges cover multiple column, it works perfectly.
But, when for example, range 1 covers only 1 column and range 2 covers more than 1 column, I get the following error message: #INCORRECT ARGUMENT SET.
Anyboby knows how to work around this problem? THANKS!
Here is my actual formula:
=COUNTIFS({site}, @cell = Site$1, {obs}, @cell = $Critère@row, {titre}, @cell = PAB$1)