Actionscript 3 :: Namespaces In Nested Xml Elements?

I have seen afew answers to the problem i am having now but mine is that of a nested one.

I have an xml looking like this:

>
<em>
<type xmlns="http://www.sitcom-project.org/sitcom" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">

[Code]....

now, how do i access the element of the implemented_with node?

ofc i could access the xmlList this way:

namespace ns = www.sitcom-project.org/sitcom;
type.ns::model;

but now, how do i access the implemented_with node in the model xmlList? i tried type.ns::model.implemented_with, but didn't work.