As long as column AB contains only the logical values TRUE or FALSE (or
empty cells):

=SUMPRODUCT(--(Data!K1:K3000="AL"),--Data!AB1:AB3000)

If you're using Excel 2007:

=COUNTIFS(Data!K1:K3000,"AL",Data!AB1:AB3000,TRUE)

--
Biff
Microsoft Excel MVP


"MattyP" wrote in message
...
Hello -
I'm in need of some help. I need to count the number of occurences (rows)
in a Worksheet, based on two criteria (column entries) in that row.

I've been trying to use the 'SUMPRODUCT' function, but keep winding up
with
a value of 0 (although I know the answer should be 0, when I count
portions
manually). The formula I've been trying to use is below:

=SUMPRODUCT((Data!K1:K3000="AL")*(Data!AB1:AB3000= "TRUE"))

Where "Data!" is the tab the information is on (the report/detail I'm
attempting to compile in on another tab), column K identifies the state
(in
this case AL), and column AB is a flag for whether or not a product has
been
included (the only values are True or False).

I've tried everything I can think of, but still can't seem to get this to
work. Any help would be most appreciated !

Thanks for your help,
- Matt