i...for the life of me can't get a sumproduct formula to work.

in a seperate worksheet i have column am. i want it to search column am for
the number 3. after that i want it to go to column x and tell me how many of
column am's number 3 have a y in column x.

i'm using =SUMPRODUCT('Orders-Breakout'!AM:AM=3)*('Orders-Breakout'!X:X="Y")

i keep getting a #num! error...what am i doing wrong?

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problem