This formula works because I found it in this forum and have applied it. Now
I want to use it for 3 conditions, but my 3rd condition is also in the column
range of C3:C46, but the condition is H4.


=SUMPRODUCT(--($A$3:$A$46=F3),--($C$3:$C$46=H3),
--($C$3:$C$46=H4),$D$3:$D$46)


When I insert the additional c3:c46 into the formula, the result is $0,
instead of the sum I'm looking for. I need to keep these particular
conditions in col C.

Any suggestions on how to overcome this?

Thanks