I have a multi-page workbook, I am trying to use an age value in "sheet 1".
Based on the age, i want to execute a number of IF functions to determine a
given criteria is met. I want to use the age as the reference for the
criteria list

=IF($D5="m",(IF(E5='boy-pres'!$C$7,"P",IF(E5='boy-natl'!$C$7,"N",""))),(IF(E5='girl-pres'!$C$7,"P",IF(E5='girl-natl'!$C$7,"N",""))))

In this case Sheet1!C5 = 7, I want to use the value of C5 in the reference
'boy-pres'!$C[value of Sheet1!C5]

I've tried using &, but i keep getting a syntax error.