Simple Change Parent Timeline AS3 problem

I am just trying to use actionscript 3.0 (Flash CS4) to change the 'Parent' timeline from a button in the 'Child' timeline
root/
parent_mc/
child_mc (button called btn is there)
This code is in the child_mc timeline above the button
btn.addEventListener(MouseEvent.CLICK, changeParentTimeline);
function changeParentTimeline(event:MouseEvent):void
this.parent_mc.gotoAndStop(10);
The above produces this error:
TypeError: Error #1010: A term is undefined and has no properties.
at Untitled_fla::child_2/changeParentTimeline()
Any help would be much appreciated.
Kind regards
Richard

Try:
btn.addEventListener(MouseEvent.CLICK, changeParentTimeline);
function changeParentTimeline(event:MouseEvent):void
MovieClip(this.parent).gotoAndStop(10);

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The problem may lie in the mapping of the attribute override in the child class to the referencing of the item class from the parent side of the relationship in the Sample class.
I further suspect this may be specific to Eclipselink based upon other postings I've seen on the web that have similar problems...
Any thoughts?
Edited by: Chris-R on Mar 3, 2010 9:56 AM

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