actionscript 3 - TypeError: Error #1009: Cannot access a property or method of a null object referenc -

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typeerror: error #1009: cannot access property or method of null object reference. @ radioskonto_fla::maintimeline/onenterframe()[radioskonto_fla.maintimeline::frame1:30]

there code!

http://radosi.lv/2/screen.png

please help!

it's because, on first call onenterframe, fl_sc has not been defined - fl_sc set s.play() when user clicks play_btn.
either check fl_sc has been defined before checking property of it, or change sequence of events there's instance of fl_sc @ first call onenterframe.


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