question about change text in frame

Hi guys i find in internet  but nothing  , how  is possible change a text
inside a frame ??

example i have this frame


my $labeled_frame2 = $mw->LabFrame(-label => "FRAME",-labelside =>
"bottom")->pack(-fill => "x");
$labeled_frame2->Label(-text => "de ma de")->pack();


i try
with this
 $labeled_frame2->configure (-text=>"BaoBABB");
        $mw->update();

but if is a simple  label like this :
$mw->Label(-text => 'ciao')->pack(-anchor => 'nw');
work but  in frame not  anyone  has an idea ?? thanks  in advice at all
ciao