Y
(number) The optional Y pixel coordinate (vertical position) to set for the dialog window. This is the Y coordinate of the upper left hand corner of the dialog relative to the screen or parent window, based on the value specified in ParentCoordinates. Set to nil to center the dialog.
Re t u r n s
(number) The result of the dialog that is passed to the DialogEx.Close action, or IDCANCEL (2) if the user chose to close the dialog using the close button (X on the title bar) on the window. If an error occurs, -1 is returned. You can use Application.GetLastError to determine whether this action failed, and why.