问题在Flash CS6 AS3上加载XML - 不显示文档的内容

I'm just trying to load a XML file to my Flash project. I think it's loading the file because it's not giving me any errors but when i try to use the information from the XML file the page is empty. I don't know why, I don't know where i am wrong. Hope you can help me. Here is the code: I'm just trying to load a XML file to my Flash