using perl iControl for system backups / archives

Hello @nesh

I want to handle error HTTP401 when authenticatin failure occured. But I can't. Please show me how to work expectedly. I wrote below code,but still exits prematurely.So perl script ends with return code 0 regardless of authentication error.

use SOAP::Lite + trace => qw(method debug);
use SOAP::Lite;
use MIME::Base64;
use Data::Dumper;

my $sHost = $ARGV[0];
my $sUID = $ARGV[1];
my $sPWD = $ARGV[2];

my $sProtocol = "https";
my $sPort = 443;

$SaveConfig = SOAP::Lite
        -> uri('urn:iControl:System/ConfigSync')
        -> proxy("$sProtocol://$sHost:$sPort/iControl/iControlPortal.cgi");
$SaveConfig->transport->http_request->header(
        'Authorization' =>
            'Basic' . MIME::Base64::encode("$sUID:$sPWD",'')
);

eval {$soap_response = $SaveConfig->get_configuration_list();};
if ($@) {
    print "ERROR: $@\n";
    die "authentication error!!";
}

Best regards.