i have a crystal report that has 4 parameters on it (par 1 = customer, par 2 = division, par 3 = salesman, par 4 = company). if i fill the parameters with valid data i get the proper result set. my issue is if i leave a parameter blank i get no result set. is there a way i can run the report and skip 1 or more parameters. or can i set a parameter as optional on the report? i do not want to use a selection formula. the table i am using has close to 400 000 records and i know that a selection formula will load everything and then filter down. this process takes way to long. can someone please help.

Thank You,
THomas