Hi,

try this. Not tested

SUMPRODUCT(--(Data!$C$2:$C$10000=$A5),--(Data!$K$2:$K$10000=10),--(Data!$I$2:$I$10000="M"),--((Data!$AC$2:$AC$10000="c")+(Data!$AC$2:$AC$10000= "m"))

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Regards,

Ashish Mathur
Microsoft Excel MVP
www.ashishmathur.com

"Diddy" wrote in message
...
Hi everyone,

I'm using
=SUMPRODUCT(--(Data!$C$2:$C$10000=$A5),--(Data!$K$2:$K$10000=10),--(Data!$I$2:$I$10000="M"),--(Data!$AC$2:$AC$10000="c"))+SUMPRODUCT(--(Data!$C$2:$C$10000=$A5),--(Data!$K$2:$K$10000=10),--(Data!$I$2:$I$10000="M"),--(Data!$AC$2:$AC$10000="m"))

So it counts if C = a5, K = 10, I = M and AC = either c or m

Is there a better way to do it?
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Diddy