Data string editing

would like to set Symbol scanners to populate the field with the string scanned in a right to left fashion

 

Eg:-

a)      Scanner scans the string 123456789 into a field of 6 char is 456789

b)      Scanner scans the string 987654321 into a field of 2 char is 21

c) Scanner scans the string 654789123 into a field of 100 char is 654789123

 

BaBarcode length is not fixed and capture field is not fixed