# About content property

**URL:** <https://forum.kirupa.com/t/about-content-property/282408>\
**Category:** Uncategorized\
**Created:** [February 21, 2009, 5:22pm UTC](https://forum.kirupa.com/t/about-content-property/282408 "2009-02-21T17:22:54Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![smallDot](https://avatars.discourse-cdn.com/v4/letter/s/a8b319/32.png) [@smallDot](https://forum.kirupa.com/u/smallDot)\
**Post date:** [February 21, 2009, 5:22pm UTC](https://forum.kirupa.com/t/about-content-property/282408/1 "2009-02-21T17:22:54Z")

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i read this tutorial, it is about how to control the time line of the loaded swf

[http://www.flepstudio.org/forum/tutorials/483-tips-abd-tricks-actionscript-3-0-loader-content.html](http://www.flepstudio.org/forum/tutorials/483-tips-abd-tricks-actionscript-3-0-loader-content.html)

but i get this error:  
TypeError: Error #1009: Cannot access a property or method of a null object reference.  
at main\_fla::MainTimeline/frame1() :diss:

```auto

var url:URLRequest = new URLRequest("play.swf");
var swfLoader:Loader = new Loader();
swfLoader.load(url);
addChild(swfLoader);

var movie:* =swfLoader.content;
var clip:MovieClip = movie;
clip.gotoAndStop(5);

```

any help