I have an incoming CSV file which has blanks where no data exists. When I apply conditional formatting using the EXCEL functionality (i.e. where cell value is greater than a specific value), the blank rows are also shaded. There are different columns -- one is formatted as "accounting" and the other is formatted as "custom" but neither treats the CSV value as 0. I'd like those blank CSV fields treated as 0 so they don't meet the criteria. Is there a way to do tha within existing conditional formatting functionality?