Eh, wait a minute...

Is this what you do?

$lable = $main->AddLabel( ... )

Win32::GUI::Dialog(); 

$label->Change(-text => "something else");
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If it is, that's the problem. The Change() call isn't executed until Perl returns from Dialog(), and that doesn't happen until you terminate the main event loop.

You have to call $label->Text() from within an event handler, like so:

sub SomeButton_Click {
    $label->Text("Blah");
    return(1);
}
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If that's already the case, my apologies.

/J