how to change the windows title

Hi,
I am having problems changing the window title.
On preload, I call
Screen.SetLocalizedString("IDS_WINDOW_TITLE", "1234");

However,this does not change the windows title.
I need to change the windows title base on language. Any Suggestion?

I have also tried
handle = Application.GetWndHandle();
Window.SetText(handle, "111");
but this only change the title that appear in the taskbar, not the title in the UI