my $statement = q{
  SELECT * 
    FROM BuyersSellers 
   WHERE FileNumber = ?
};

#force selectall_arrayref to return an arrayref of hashrefs
my %attr = (
  dbi_fetchall_arrayref_attr => {},
); 

my $BuyersSellers = $dbh->selectall_arrayref($statement, \%attr, $filenumber);