Aging bucket through ssrs ax 2012

//Aging bucket through ssrs ax 2012

1-30 days

=Sum(iif((Fields!TransDate.Value <= Parameters!ToDate.Value)
and (Fields!TransDate.Value >= DateAdd("d",-30,Parameters!ToDate.Value))
,Fields!Debit.Value,0))
+
Sum(iif((Fields!TransDate.Value <= Parameters!ToDate.Value)
and (Fields!TransDate.Value >= DateAdd("d",-30,Parameters!ToDate.Value))
,Fields!Credit.Value,0))

30-60 days

=Sum(iif((Fields!TransDate.Value <= DateAdd("d",-31,Parameters!ToDate.Value))
and (Fields!TransDate.Value >= DateAdd("d",-30,DateAdd("d",-30,Parameters!ToDate.Value)))
and instr(Fields!Txt.Value, "Sales"),Fields!Debit.Value,0))
+
Sum(iif((Fields!TransDate.Value <= DateAdd("d",-31,Parameters!ToDate.Value))
and (Fields!TransDate.Value >= DateAdd("d",-30,DateAdd("d",-30,Parameters!ToDate.Value))
and instr(Fields!Txt.Value, "Sales")),Fields!Credit.Value,0))


so on