#execute stored procedure
my $sp = $msdbh->prepare(qq|usp_Dashboard_CallType \@start = 20080101|);
$sp->execute or die("$sp->errstr");

##</code><code>##

DBD::ODBC::st execute failed: [Microsoft][ODBC SQL Server Driver][SQL Server]Error converting data type int to datetime. 
##</code><code>##

my $sp = $msdbh->prepare(qq|usp_Dashboard_CallType \@start = $next_date|);