I like not to hard code formula so this example lets you choose in cell A1
a number from 1 - 12 to represent the month and cell A2 lets you choose the
year
Try it out let me know if this is what your looking for
=SUMPRODUCT((MONTH($A$12:$A$399)=A1)*(YEAR($A$12:$ A$399)=A2)*($B$12:$B$399="PI")*($E$12:$E$399))

"Jerry Rogers" wrote:

Hi,

I need to change the reference (=B474) in this formula to something that
will select all entries in the range A12:A399 that fall within the month of
SEP 06 then sum the numbers found in Column E. The cells in range A12:A39
are formatted as dates. I don't know how to enter this. Please help.

=SUMPRODUCT(($B$12:$B$399="PI")*($A$12:$A$399=B474 )*($E$12:$E$399))

Thanks

--
Jerry