Hi all can somebody help me to built below formulae in MDX Bal Date diffarance A_Value(diffarance*Bal) 100 1-1-2002 12 1200 200 12-1-2002 5 1000 300 17-1-2002 14 4200 (Next Date is ---- --------- ----------- end of the month) 31--->Count 6400-->Total Formulae =Total/Count