Hi, well finally found the solution, it took me a while, but I did it, ok the thing is maybe there is something with the classes when I'm try the casting, for some reason, flash believe they are different and when I cast it, give some error that were showing me like null, not sure, really, but at the end I found a way to access the variables without the cast like this
nc = connectorLoader.content["conn"] as NetConnection;
and only cast the object I want, instead of the whole class, still not sure why this is the only way but at the end, I was able to see the object and now all is working fine, maybe there is something with the way the swf are in different security domains, but if this works, I'm ok, thanks to all for trying to resolve