my $s = SOAP::Lite
-> uri ('This is my URI')
-> proxy ('This is my proxy.asmx')
-> on_action(sub{join '/', @_})
-> on_fault(sub{});

$result = $s->PerformUpdate($data)->result;

if ($result) {
	my $xs = new XML::Simple(keeproot => 1);
	my $XMLref = $xs->XMLin($result, suppressempty => '');

        print $XMLref->{wellmed}->{wellmed.ack}->{errors};
}

#using data dumper I get the following output
$VAR1 = { 'wellmed' => { 'wellmedack' => {}, 'wellmed.ack' => { 'errors' => '0', 'wellmed.response' => 'User data updated for ID: aac20fd41e07ea11d9bfc1ac192a16aa77', 'responses' => '1' } } };