>>I don't understand why you want / as a separator, but I gues you have a good reason. I guess you must write a simple UDF for this, and use DO CASE for the posible number of digits.
>
>yes, i do this but only i have problem when i want to use from this UDF in SUM portion.
>when i use in summation field an error was occured(*** )

Either you must reserve a bigger space for the sum, or you use the wrong formula for the sum.