SumProduct on Multiple Criteria

I got a question why the sumproduct can not detect the value on the second cateria that i want

=SUMPRODUCT(($D$2:$D$15="Cash")*($E$2:$E$15="1"))
but it give me zero suppose have 1. Why like this ? Please help
Date Invoice Company ID Method Amount
15/01/2008 110187 Check 57.62
16/01/2008 110188 Cash 1.00
16/01/2008 110189 CC 23.74
16/01/2008 110190 Check 49.12
17/01/2008 110191 Check 17.35
18/01/2008 110192 CC 62.95
18/01/2008 110193 Cash 1.41
18/01/2008 110194 Check 23.62
19/01/2008 110195 Check 58.83
20/01/2008 110196 Check 81.07
20/01/2008 110197 Check 51.31
21/01/2008 110198 CC 36.92
21/01/2008 110199 Cash 82.68
21/01/2008 110200 CC 53.41