TMS,

So this formula:

=SUMPRODUCT((('ENE 2012'!$B$5:$B$10=$B5)*('ENE 2012'!$C$5:$C$10=$C5)*('ENE 2012'!$D$5:$D$10)))

will only add the items on the 'Ene 2012' tab, do I have any options for adding across all the tabs?

Thanks,


John