Application global access

In flex 4, accessing your application globally has changed from Application.application in flex 3, to FlexGlobals.topLevelApplication.

Flex 3:

import mx.core.Application;
var myApp:MyApp = Application.application as MyApp;

Flex 4:

import mx.core.FlexGlobals;
var myApp:MyApp = FlexGlobals.topLevelApplication as MyApp;

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