SAP Module sapnwrfc: Retrieving data from SAP using RFC

Question

I'm sorry, if I'm asking about something that's obvious in SAP. I need to develop a perl application in a remote server that will receive a requisition from an abap application.
I'm using the SAP Module sapnwrfc. I connect to SAP Gateway with no errors and execute the function sapnwrfc::installFunction (no errors returned) but I can't find the transaction in SAP. Anybody has some document about configurations that I need to do in sap ? Or anybody could see the code above and tell me what is wrong?
[code]
#!/usr/bin/perl
use sapnwrfc;
use Data::Dumper;
use utf8;
  SAPNW::Rfc->load_config;
  my $conn = SAPNW::Rfc->rfc_connect;
  # print "Testing SAPNW::Rfc-$SAPNW::Rfc::VERSION\n";
  my $func = new SAPNW::RFC::FunctionDescriptor("ZRFCDAZEL") ;
  my $pipedata = new SAPNW::RFC::Type(name => 'DATA',
                                      type => RFCTYPE_TABLE,
                                      fields => [{name => 'OBJTY',
                                                  type => RFCTYPE_CHAR,
                                                  len => 4},
                                                 {name => 'OBJKY',
                                                  type => RFCTYPE_CHAR,
                                                  len => 10},
                                                 {name => 'ATTRIBUTES',
                                                  type => RFCTYPE_CHAR,
                                                  len => 255},
  $func->addParameter(new SAPNW::RFC::Export(name => "COMMAND",
                                             len => 255,
                                             type => $pipedata));
  $func->addParameter(new SAPNW::RFC::Import(name => "COMMAND1",
                                             len => 255,
                                             type => $pipedata));
$funcao->callback(\&do_remote_pipe);
$conn->disconnect();
exit;
sub do_remote_pipe {
    my $param = shift;
    print "\nPARM : " . $param->{'ZDUS'} . "\n";
    $param->COMMAND1([{'LOG'=>'Execute ZDUS PARAMETER '}]);
    $param->COMMAND1([{'STATUS'=>'S'}]);
    return 1;
sub do_global_callback {
    warn "Running global callback ...\n";
    return 1;

Answer 1

Timo,
I included the code in the VO and in my bean, I was able to generate this code snippet:
public String GetParamterSetup() {
        BindingContainer bindings = getBindings();
        OperationBinding operationBinding = bindings.getOperationBinding("applyParamVOCriteria");
        operationBinding.getParamsMap().put("vcodetype", codeType);
        Object result = operationBinding.execute();
        System.out.println(result);
        if (!operationBinding.getErrors().isEmpty()) {
            return null;
        return null;
I was able to get the result from the System.out.println. It returns null when there is no match. However, I  want  to return the entire row or have access to that attribute.  For instance if I have 'GB011' what the system will display for me is 'viewrow [oracle.jbo.Key[GB011 ]]'
Pls, how can I have access to individual attributes like ParamSetup.codeType, ParamSetuo.MainCode etc...