=IF($B5002="","",SUMPRODUCT(--(Main!$A$10:$A$5000=Sheet2!P3),--(Main!$A$10:$A$5000<=Sheet2!R3),--(Main!$B$10:$B$5000=$B5002)))

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HTH

Bob

(there's no email, no snail mail, but somewhere should be gmail in my addy)

"AOP" wrote in message
...
I have the following formular:

=IF($B5002="","",COUNTIF(MAIN!$B$10:$B$5000,"" &$B5002 & ""))
Column A is the date
Column B is the unit

How do I modify it to count between two dates that are in cells Sheet2 P3
and R3

Thank you
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AOP