custom formula is: "=COUNTIF($B1:$B100,"month")>1."
I tried also:
"=COUNTIF($B1:$B100,"month")>1"
=COUNTIF($B1:$B100,"month")>1
="COUNTIF($B1:$B100,"month")>1"
I know it shouldn't work but I test all that comes to my mind.
I paste this in a cell: =COUNTIF($B1:$B100,"month")>1
and returns TRUE.
The formula is working, the conditional formatting isn't.
Any ideas?