How to make a variable in main application available in item renderer

I have a variable in my main applicaton.
public var accessLevel:String;
I have a spark list that uses a custom item renderer. How do i access the value of accessLevel in my item renderer?

You can use outerDocument/parentDocument or FlexGlobals.topLevelApplication

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    I am trying to figure out how to make a variable:
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    I once created a connection pool programatically with Apache DBCP API. It didnt took more than 10 lines. Unforchunetly I dont have to code with me now.
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