Calculating Formula From All Sheets Into Main Sheet?

I want to calculate all datas from everyday of a month in a main sheet which is like;

{=average(if(('(1)'!$C$3:$C$15=C3)*('(1)'!$V$3:$X$15>0);'(1)'!$V$3:$X$15);if(('(2)'!$C$3:$C$15=C3)*('(2)'!$V$3:$X$15>0);'(2)'!$V$3:$X$15))}

In the main sheet C3 cell will be equal to c3:c15 serie and values in the v3:x15 serie will be greater than 0. Then formula calculate average of v3:x15 values based on c3 cell like vlookup. I'm writing formulas like that everytime and want it to get datas from all days of a month from 1 to 31. I tried '(1)31)' and when named sheets like 1,2,3 '1:31' i got #value error however when i write 31 if formulas for all days i got the correct results.