How I can pass a DateTime parameter from an ASP page?

[mishicato]

my report use a Store Procedure from SQL Server 7.0
it returns a DateTime Field

then I need to filter by this Field

I try to make the follow formula:

obj.SelectionFormula = "{sp_Reg001.CodigoAgencia} = 8 AND {sp_Reg001.FechaProceso} >= DTSToDateTime ('2003/01/20 15:39:18')"

but I get a message that tell me "the name of fields is unknow"

what is wrong?

Help me please