I always use shared variables in formulas.  You can access any field and increment however you like. There is a bit more work, but I can get an answer.  I personally don't get running totals, but I have been using shared variables for years, it is second nature at this point.

can i have ur email id so i can send you report so you can get it properly

sir I'm sending formula I'm trying to use. Please check it :
whileprintingrecords;
numbervar array MyArray;
numbervar trial:=sum({@RebillOrderCount}, {Order.CreateDateTime}, "daily");
numbervar Counter:= count({Order.OrderID});
numbervar tushar;
numbervar total;
numbervar i:=1;

Redim Preserve MyArray[Counter];
//For tushar := 1 To Counter Do
//(MyArray[tushar] := trial*{OrderProduct.ProductPrice};
//
//)

While i < Counter Do
(
MyArray := tonumber(trial * {OrderProduct.ProductPrice});
i := i + 1;

total:= sum(MyArray);
myarray;
//Local StringVar MyArray;
//ReDim MyArray[6];

)

it might show u what i'm trying to do

thanks and regards,
Tushar Jindle

I am not an array expert, but from a programming side, it would appear that you are not incrementing the array counter, so you are just constantly reassigning the values to the same array member.