Application.SysTray.balloonTimeout doesn't work

[alvin3343]

Hi,
I setup systray's property in initial section:

Application.SysTray.tip ="hello";
Application.SysTray.icon = getAdditionalFile("hello.ico");
Application.SysTray.useDefaultHandler =false;
Application.SysTray.balloonTimeout =10000;
Application.SysTray.add();


I set the balloonTimeout to 10 seconds,
but it seems I can't expect when it will disappear.
Anyone knows why?
Thanks.

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Alvin