How to manipulate SOAP::Lite Server answer to special format ?

[physi]

Hello fellow monks,
I got a question about SOAP::Lite, which I can't fiddle out:

my $daemon = SOAP::Transport::HTTP::Daemon
  -> new (LocalPort => 8088, Reuse => 1)
  -> on_action(sub {})
  -> dispatch_to('ServiceError');

print "Contact to SOAP server at ", $daemon->url, "\n";
$daemon->handle;

sub ServiceError {
print "ServiceError\n";
  return SOAP::Data->name('ResponseType')->value('ACKNOWLEDGE');
}

This returns the following SOAP-XML to the client:

<soap:Envelope soap:encodingStyle="http://schemas.xmlsoap.org/soap/enc
+oding/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:s
+oapenc="http://schemas.xmlsoap.org/soap/encoding/" xmlns:xsd="http://
+www.w3.org/2001/XMLSchema" xmlns:soap="http://schemas.xmlsoap.org/soa
+p/envelope/">
   <soap:Body>
      <ServiceErrorResponse xmlns="http://DataModel_v4.xxxxxxxxx.com">
         <ResponseType xsi:type="xsd:string">ACKNOWLEDGE</ResponseType
+>
      </ServiceErrorResponse>
   </soap:Body>
</soap:Envelope>

but this one I need to send to the client :

<soap:Envelope soap:encodingStyle="http://schemas.xmlsoap.org/soap/enc
+oding/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:s
+o
+apenc="http://schemas.xmlsoap.org/soap/encoding/" xmlns:xsd="http://w
+ww.w3.org/2001/XMLSchema" xmlns:soap="http://schemas.xmlsoap.org/soap
+/
+envelope/">
   <soapenv:Body>
      <ResponseType>ACKNOWLEDGE</ResponseType>
   </soapenv:Body>
</soapenv:Envelope>

Is there a way to tell SOAP::Lite to suppress the  <ServiceErrorResponse> Tags around my single-line message?

Thanks for any hints !

Cheers,
Christian