Fullscreen problem in Swfkit 3.5

[Techking]

Hi,

I use swfkit 3.5 pro

When I try to go to fullscreen mode in AS3 using this script at application startup, nothing happen:
stage.fullScreenSourceRect = new Rectangle(0, 0, 800, 500);
stage.displayState=StageDisplayState.FULL_SCREEN;


this work with the swf file alone but not with the compiled exe.

side note : this does work with the exe when the code is associated with a button click on the application swf but doesnt work when executing it at application startup (doesnt work with a timer of 1sec after startup too)

I cant use swfkit fullscreen function because it doesnt allow GPU acceration like the actionscript3 code.

Please help...

Best regards,
Omar