# Stage.fullScreenWidth/Height not working

**URL:** https://forum.kirupa.com/t/stage-fullscreenwidth-height-not-working/277318
**Category:** Uncategorized
**Created:** [December 10, 2008, 7:32pm UTC](https://forum.kirupa.com/t/stage-fullscreenwidth-height-not-working/277318 "2008-12-10T19:32:53Z")
**Posts on this page:** 1
**Page:** 1

<div class="post-metadata">

### Author: ![rondog](https://yyz1.discourse-cdn.com/flex011/user_avatar/forum.kirupa.com/rondog/32/2478_2.png) [@rondog](https://forum.kirupa.com/u/rondog)
#### Post date: [December 10, 2008, 7:32pm UTC](https://forum.kirupa.com/t/stage-fullscreenwidth-height-not-working/277318/1 "2008-12-10T19:32:53Z")

</div>

I am using the code directly from here: [http://livedocs.adobe.com/flash/9.0/ActionScriptLangRefV3/flash/display/Stage.html#fullScreenWidth](http://livedocs.adobe.com/flash/9.0/ActionScriptLangRefV3/flash/display/Stage.html#fullScreenWidth)

and getting this error:

```auto

1119: Access of possibly undefined property fullScreenWidth through a reference with static type flash.display:Stage.
1119: Access of possibly undefined property fullScreenHeight through a reference with static type flash.display:Stage.

```

Am I missing a package or something???