So the param is returning an array and you want to do what with the array? Add 1 to the last date in the array or what? I'm not understanding exactly what you want to do now.
EDIT
Sorry. I think I understand somewhat, but you're going to have to fill in the rest. Do you want something like this in the selection formula:
{Jail_Confinement.Date_Confined}<=dateadd('d', +1, {?date})
or
isnull ({Jail_Confinement.Date_Released}) or
{Jail_Confinement.Date_Released}>=dateadd('d', +1, {?date})
Edited by FrnhtGLI - 04 Mar 2010 at 10:46am