AddPrintable not working?

Hi All:

I am using QuickReport bundled with D4 professional. I use
TitleBand1.AddPrintable(TQRLabel), but it never show the labels If I use
other way like MyLabel := TQRLabel.Create(nil);
             MyLabel.Parent := TitleBand1;
it works.

Cna anyone point what's wrong with that?

Thanks

Roland Zhang