extending flex 4 'group' component problem

I have a component that were exported from catalyst (the component is based on a tag). Now I created a new component extending this. However when I add this new component to my module it doesn't seem to inherit the designs that were exported from catalyst. Any idea how i can d开发者_如何学Co that?

Ofcource when I add the component that were directly out of catalyst all the designs appears..

Thanks.

If show you us some code, it may help. But, it sounds like you're not properly setting the skin class on your List instance.