Hi Peter,
If you have Start Serial and End Serial as separate database fields then place those filelds in details section and sort on Start serial field.
IF your data is like
1-50
55-456
769-999
Then split the data as below
//Start Serial formula
Split(database_field,'-')[1]
//End Serial formula
Split(Database_filed,'-')[2]
Then place these fields in details section and sort on Start field.
--Praveen G
Edited by praveeng - 29 Oct 2014 at 6:15am