I am so close, I can't stand it. I have the following formula:
SUMPRODUCT(--(AND('Vend Sls Act'!B5:IV5=Worksheet!C8,'Vend Sls
Act'!B5:IV5<=Worksheet!D8)),'Vend Sls Act'!$B$7:$IV$7)

The layout is:
1. A worksheet where the billing days are across the top B5:IV5 and the
sales go across by day B7:IV7
2. I have a worksheet that gives me beginning billing days and ending
billing days.

If I take out the and from the above and just leave the = portion, the
formula works. Once I put the and statement in, it doesn't. How can I get
it to work between a range of cells? I hope this is clear. Thank you.