I was trying to port the cairgormflexstore to flex 2 and had some 
problems with data binding, for example:

In flex 1.5 you could bind to model.shoppingCart.totalProductPrice, 
now in Flex 2 you get this warning:

Data binding will not be able to detect assignments to 
totalProductPrice.

And the binding won't work.
In order to solve this problem I had to change the come of the 
ShoppingCart class like this:

ModelLocator.getInstance().totalProductPrice = totalProductPrice;

And then bind to model.totalProductPrice in my views to update that 
property.
It would be nice to see a new advanced sample like the 
cairgormflexstore for Flex 2 to see how to properly handle this 
migration issues.

Hope to get some feedbacks.






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