web service thru old perl version

when I am using upgrade version of perl (ofcourse, also upgrade version of soap::lite) so I successfully connect to my server with all needed methods. when I moved using older perl version (ofcourse, also older version of soap::lite), so envelope created differently, and I did not success invoke server methods which got params well. Is there need change something in code or only in modules? I开发者_运维问答f change can be done thru code, so which thing I need to change. for now my code look like:

my $ws_url = '$url';
my $ws_uri = '$uri';
my $ws_xmlns = '$xmlns';            

eval
{
                  my $soap = SOAP::Lite
                  -> uri( $ws_uri)
                  -> on_action(sub{sprintf '%s', @_})
                  -> proxy($ws_url,timeout => 15);

                 my @params = ( SOAP::Data->name(Add => "$paramAdd"));
                 $response = $soap->EndUnit(@params);

                  if($response->fault)
                  {
                      # die raises an exception
                      print "=======fault happened=====\n";
                      die $response->faultstring;
                  }
                  else
                  {
                      print $response->result;
                      print "\n";
                  }
                        };
                        if ($@)
                        {
                          print "$@\n";
                          print "Failed \n";
                        };

Thanks a lot ahead for your help! Noa :-)

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Take a look at the changes between the versions of SOAP::Lite you are using : Changes

Also, you shold list what versions of Perl and SOAP::Lite you are talking about ..