# Refer maintimeline inside class

**URL:** <https://forum.kirupa.com/t/refer-maintimeline-inside-class/286268>\
**Category:** Uncategorized\
**Created:** [April 13, 2009, 5:55am UTC](https://forum.kirupa.com/t/refer-maintimeline-inside-class/286268 "2009-04-13T05:55:39Z")\
**Posts on this page:** 1\
**Page:** 1

<div class="post-metadata">

**Author:** ![samyphp](https://avatars.discourse-cdn.com/v4/letter/s/8e7dd6/32.png) [@samyphp](https://forum.kirupa.com/u/samyphp)\
**Post date:** [April 13, 2009, 5:55am UTC](https://forum.kirupa.com/t/refer-maintimeline-inside-class/286268/1 "2009-04-13T05:55:39Z")

</div>

hi there,  
am new to actionscript3.  
how to refer the main time line or stage from inside the class.

class sample{  
function sample(){  
trace(root); // its displaying as null  
}  
}

in actionscript 2 we use \_root for this… in actionscript3 if we use root…why its not working inside the class…?