From Forum Nokia Wiki

Best to refer the article in case you are new to FlashLite and even in case you have moderate knowledge about it.

Even though the article titles about 'Build a resuable....', it mentions so of the baisc features of FlashLite ie Not support to Functions. Even though being programming language, FlashLite1.1 does not function. The alternative is to use the procedura call using the 'call'/'tellTarget' instructions. The arthor has given the best alternative to implement the function, passing arguments, callback function.

The source code of the actual component can be used as guideline for developing your own component in FlashLite. The guidelines section provides the best coding practises in FlashLite.