# Document Class Variables

**URL:** <https://forum.kirupa.com/t/document-class-variables/248308>\
**Category:** flash\
**Created:** [January 7, 2008, 12:37am UTC](https://forum.kirupa.com/t/document-class-variables/248308 "2008-01-07T00:37:43Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![FlashMapper](https://avatars.discourse-cdn.com/v4/letter/f/73ab20/32.png) [@FlashMapper](https://forum.kirupa.com/u/FlashMapper)\
**Post date:** [January 7, 2008, 12:37am UTC](https://forum.kirupa.com/t/document-class-variables/248308/1 "2008-01-07T00:37:43Z")

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I have a document class setting a variable called “\_captioning”, being set to false. I have a base class being added that needs to check and see what this variable is set to when it is added to the stage. I can’t get it to read this variable at all.

I’ve been doing some research and found a post on this site talking about MovieClip(root) for this same problem. I can’t get it to work at all. MovieClip(root).\_captioning will trace from in the document class but not the base class. If I try even tracing MovieClip(root) all I get is “null”. If I trace MovieClip(root) from the document class, I get [object MainEngineDocClass] (MainEngineDocClass is the name of my document class).

This thing is driving me crazy. Can anyone help?