ServerController.OnBeforeNewSession

[DanielFields]

I'm trying this method out before using it in a live setting.  The result of the code below is a blank screen.  Is there some way to return text, or an error message?

Code:

procedure TIWServerController.IWServerControllerBaseBeforeNewSession(const aUrlPath: string; aRequest: THttpRequest; out vCanCreate: Boolean);
begin
  vCanCreate := false;
end;