# HELP ! Flash CS4 AS3

**URL:** <https://forum.kirupa.com/t/help-flash-cs4-as3/309137>\
**Category:** Uncategorized\
**Created:** [May 7, 2010, 8:02pm UTC](https://forum.kirupa.com/t/help-flash-cs4-as3/309137 "2010-05-07T20:02:08Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![omenas](https://avatars.discourse-cdn.com/v4/letter/o/a88e57/32.png) [@omenas](https://forum.kirupa.com/u/omenas)\
**Post date:** [May 7, 2010, 8:02pm UTC](https://forum.kirupa.com/t/help-flash-cs4-as3/309137/1 "2010-05-07T20:02:08Z")

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Hey all,

I’m quite new to Action Script (I’ve played with flash for a while, but only for animation not code) and I’ve been following some video tutorials from [lynda.com](http://lynda.com) but I’ve run into a problem that I can’t quite figure out.

Using the exact code mentioned in the video (he’s working in flash cs4 with Action Script 3) I’m getting errors pointing to an undefined property even though I know that I’ve properly defined said property.

Basically my website is 2 pages, both of which I’ve made into movie clips. Inside the home page scroller that has scrollbar\_mc, mask and content\_mc movie clips and mask is a button called overted\_btn with an instance name of “overted”. Back on the Scene 1 level, in the first frame, I have the following code:  
Code:  
stop();

//handle button events  
overted.addEventListener(MouseEvent.CLICK, clickSection);

function clickSection(evtObj:MouseEvent){  
trace (“Button was clicked!”)  
}  
When I test run the movie, I get the 1120 error pointing to line 4 in the AS code.

Any ideas on why its not working?