Get values from 15 sheets in a Wbook

[Carpe Diem]

Hi,

I have a file with 15 sheets, and I need to get 10 type of values
each
month accordin one or two conditions. So I use sumproduct to get
thios
values for each sheet to put in another sheet but the problem is that
I have to do 15 sumproduct in the same cell and the formula on one
cell is limited.


Have another to do it ? for example using names for ecah sheet ???


Thanks in advance


Ricardo