[perl-win32-gui-users] Problems with ListBox in separated modules

[e5485630]

I am using WIN32::GUI and I have separate some 
Windows in different .pm modules. 
I have add the  -name  => 
"PackageName::ControlName" in order to use the 
event in each module and it works ...
..but I am terrible confuse because I have a 
ListBox that change this information when a user 
click on a Button...but I can remove the 
previous items.
I can Add items,but not remove.I have tried --
>Reset() and ->Clear(). But the list don't 
appear.
What is going wrong ??? 

Is necessary to use 'use strict' in this case or 
is only a help?
 
The extract of the event:
 
# ========================
sub baquest_Click{
# ========================
 
$escollit=$comboalu->GetString($comboalu-
>SelectedItem());
 

 $pos=0;
 for $napsicols (obtenir_ref_assignatures
($escollit))
 {
     $comboassig->RemoveItem($pos);
  
  $cargols = $napsicols->{Nomassig};
  print "------->>>>>>>>>>>>>$pos   $cargols \n";
  $comboassig->InsertItem($cargols,$pos);
  $pos++;

 }
}
 
Thanks !!!
 
Guillem Cunillera i Wefers