The formula returns a 0. I need it to return $38,241.51

=SUMPRODUCT((Data!B1:B20000="ABC
Company")*(Data!Q1:Q20000="Apr-08")*(L1:L20000))The formula below returns a
0. I need it to return $38,241.51.

Column B = Company Name
Column Q = MM/YY
Column L = Subtotal dollar amount

What am I missing and how can this be corrected to return the correct value.