actionscript 3 - AS3: Error Access of undefined property -

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hey guys seem having huge brain fart today, can't see figure out doing wrong here when creating button. here's lines of code set of eyes me figure out i'm doing wrong.

name_btn.addeventlistener(mouseevent.click, scrollbox);  function scrollbox(event:mouseevent):void{  }

i left out code in between these 2 lines there wasn't lot of things go through.


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