Unable to parse dc:creator/dc:content using node-xmlreader

I'm experiencing an issue while using the node-xmlreader parser (http://ift.tt/1B9gk6G) and trying to parse from my feed two nodes: to be specific, the "dc:creator" node and "dc:content".

What I get is a "TypeError" on this line of code:

object.set("Autore",actualItem.dc:creator.text());

It looks like the compiler doesn't want to "recnognize" the colon. Has somebody got an error like this? Is there a way to fix it or i should change xml parser? In this case, which one is the best one (keep in mind that i'm creating code to be used in Parse.com)?

Thanks at all :)