How to display StageWebView page in .ipa app from Flash Professional

I need to display a .mp4 file in a small app that I am building for the iPad with Flash Professional CC. The best way looks to be StageWebView, but I cant get this to work. I found some code that is supposed to do the trick but I keep getting errors: 1180: Call to a possibly undefined method File.

Can anyone please give me some help with this?

var webView = new StageWebView(); webView.stage = this.stage; webView.viewPort = new Rectangle( 0, 0, stage.stageWidth, stage.stageHeight); var path:String = new File(new File("app:/path/file.html").nativePath).url; webView.loadURL("app:/path/file.html");