I have the following formula to count values greater than zero.

=COUNTIF('Product Sales'!$H$4:$H$1000, "" & 0)

I want to change it so that if the sum of the range in a row is greater than
zero.

=COUNTIF(sum('Product Sales'!$H$4:$S$1000), "" & 0)

I know this is not correct, but what do I need to do?

Bruce