Hi,
I've been trying to use this formula:
COUNTIF(Due Date, MONTH(@cell) = 8, but it returns an error INVALID DATA TYPE
If I limit the data range to exclude the blank rows than it has no problems. But this is not pratical because later when I more tasks, I have to adjust the formula. Interestingly SUMIF does not have this problem using similar parameters.
Besides creating a new column to calculate the month separately any other solutions?
