You need to post your software version, and what "passed in" means.
Are you calling CR from an application?
Not sure why you are trying to specify how the criteria is passed to the database, Crystal handles this for you if you simply set a multiple parameter in the record selection formula, as in:
(
isnull({table.id})
or
{tableid} in [1,2,3]
)
This assumes that ID is a numeric, otherwise wrap each value in double quotes, but again, please post specifics.
-k