MDI Child Public Variable

[KodeZwerg]

Was würde gegen diesen Aufruf hier sprechen?

Delphi-Quellcode:

procedure TMainForm.AboutMenuClick(Sender: TObject);
var
  Form : TAboutForm;
begin
  Form := TAboutForm.Create(Self);
  Try
    Form.ShowModal;
  Finally
    Form.Free;
  End;
end;