Error with SQL Statement

Hello Experts,

We are getting syntax error with one of our filter statement. We are on BI 4.1 SP07.

Appreciate your help.

(

                    ( ISNUMERIC(

                    @Prompt('Elapsed Days:','A',,Mono,Free,Persistent,{'Number of days from today'})

                    )

                     = 0 )

                AND

                    ("AGG_MESSAGE"."DAY_ID" BETWEEN

                           Datepart(dy, @Prompt('1. Start Date:','D',,Mono,Free,Persistent))

                            + (366 * (datepart(yyyy,

                           @Prompt('1. Start Date:','D',,Mono,Free,Persistent)) - 2000))

                       AND

                           Datepart(dy, @Prompt('2. End Date:','D',,Mono,Free,Persistent))

                            + (366 * (datepart(yyyy,

                            @Prompt('2. End Date:','D',,Mono,Free,Persistent)) - 2000))

                    )

              )

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Thanks.