The pod on WSDL::Generator says it has issues:

WSDL doesn’t works only on perl 5.6 and not 5.8. UNIVERSAL::AUTOLOAD i
+s broken in perl 5.8 and it is used by Class::Hook upon wich WSDL::Ge
+nerator depends.
[download]

You can use Pod::WSDL (update: wrong package name) instead though. Here's the package marked up with some pod and a different Perl script following it:

package WebserviceFunctions;
sub new { bless {}, shift; }
=begin WSDL             
 _DOC Hello                                                           
+  
=end WSDL               
                 
sub Hello {                                                           
    my ($s, $name) = @_;
    return "Hello, $name".$/; 
}                                                                     
+          
=begin WSDL             
 _DOC Goodbye              
=end WSDL                
sub Goodbye { 
       
    my ($s, $name) = @_;
    return "Goodbye, $name".$/;
}
[download]

and the script:

#!/usr/bin/perl -w     

use Pod::WSDL;
use CGI;

print CGI->header('text/xml');

my $pod = new Pod::WSDL(source=> 'WebServiceFunctions',
                        location=>'http://localhost/webservice_pod.pl'
+,
                        pretty=>1,
                        withDocumentation=>1);

print $pod->WSDL;
1;
[download]