gtk signal_connect error

[wout clymans <woutclymans scarlet be>]

i am trying to write a little perl/Gtk app by hand and now i am stuck on 
this (probably) stupid mistake

when i click on one of the buttons on the dialog, a sub has to be called 
with extra arguments (textfields, checkbutton) but i can't get the 
arguments to work in the sub!


 
$dialog->signal_connect('response' , sub {
       my ($dialog, $response, @data) = @_;

       if($response eq 'ok'){
           $uid = $data[0]->get_text;
           $passwd = $data[1]->get_text;
           print $uid; #just for testing
           print $passwd; #just for testing
           if ($data[3]->get_active) {
               &write_configFile;
           }
           else {
               &remove_configFile;
           }
           $dialog->destroy;
       }
       else{
         $dialog->destroy;
       }
   },[$txtLogin, $txtPassword, $checkRemember] );


when i press the ok button, i get this error:


*** unhandled exception in callback:
***   Can't call method "get_text" on unblessed reference


this means that $data[0] is unblessed, but how can i solve it?

thanks