sql parameters truncated to 80 char

Hi,

When I run a select against MSSQL, my sql parameters get limited to 80
characters.  I am trying to run a query against a varchar(250) field, buy my
parameters get cut off at 80 characters.

I am using FreeTDS on a linux box to connect to MSSQL.  We are using perl.
The protocol is set to 8.0.  I ran profiler and trapped the sql that is
sent.  In the sql you can see where it sets the field to varchar(80) instead
of varchar(250).

Any suggestions on how I can fix this?

thanks
chad

DECLARE @p1 INT
SET @p1 = NULL
EXEC sp_prepare @p1 OUTPUT, N'@P1 varchar(80)',
    N'
       SELECT distinct
       ses_title,
                ses_code,
                ses_start_date,
                ses_start_time,
                ses_end_time,
                lrm_name


       FROM     dbo.ev_event
                JOIN dbo.ev_session ON evt_key = ses_evt_key
                                       AND ses_delete_flag = 0
                                       AND evt_code = ''ASA2010''
                JOIN dbo.ev_session_ext ON ses_key = ses_key_ext
                LEFT JOIN dbo.client_aafp_m09_cme_session ON ses_m09_key_ext
= m09_key
                LEFT JOIN ev_event_session_room ON esr_ses_key = ses_key
                LEFT JOIN ev_event_location_room ON lrm_key = esr_lrm_key
                LEFT JOIN ev_event_location ON evl_key = lrm_evl_key
                left join ev_location (nolock) on loc_key = evl_loc_key
                LEFT JOIN dbo.ev_session_track_type ON ses_set_key = set_key
       where
            ses_title = @p1
      order by  ses_start_date, ses_start_time
       ', 1
select @p1
EXEC sp_execute 1,    'Cardiac Arrhythmias (including atrial fibrillation):
A Brief Review of Cardiac Arrhythmias'