Filter to change currency - how to make it work inside templates

[Jesus82]

I have built [this filter] in order to be able to switch currencies (http://jsfiddle.net/Joe82/nkr7zch7/)

I have it in my controller, and it works fine for my html, but it doesn't work for the data that is inside the ngCart templates (addtocart.html; cart.html; checkout.html; summary.html). The console gives the following error: selectedCurrency is undefined
EDIT: The problem is more specifically that the ng-cart directive cannot access the scope outside of the directive that contains the currency symbols and exchange rates. I have tried it by using $rootscope but it doesn't work. Any idea how to achieve that? Thanks

[jasontrk]

Hi there, did you manage to change the currency within the cart in the end? I'm dabbling with ngcart and can't seem to get the default currency to change to £.