How to setup wildcard subdomains on Lighttpd?

I read lots of threads but nothing works so far.

How can I setup wildcard sudomains on Lighttpd for Network? (*.domain.com) 

* I'm not talking about clean URLs. 

this is my code : 

$HTTP["host"] =~ "(^|.*?\.)domain.com$" {

    server.document-root = "/var/www/domain.com"

    accesslog.filename = "/var/log/lighttpd/domain.com-access.log"

    server.error-handler-404 = "/index.php"

}