Adding Files to Task

System

Hi everyone

HELP

OK. Problem:
I have to add Files to few Tasks.

part of code:
my($job) = TeamSite::WFworkflow->new($jobid);
$test = $job->GetTasks();
foreach $tas (@$test){
$tas->AddFile($editor_file, "com");
$tas->Refresh();
$job->Refresh();

And nothing happens
I've also tried with iwaddtaskfile.exe

I'm working with 552 + NT_TS552_LSP1_11020a

Have i forgotten something?

thx
Alex