XML file not packaged with .apk

Hi all,

I am using XML files to describe certain structured in my game worlds. These files are read and parsed at runtime. In the Unity Editor,this works fine, but when I create an APK to test on my Android device, the file does not get packaged along with the rest of the Resources. I know this because the structures described in the XML file is not appearing as intended on the game. I load the XML files in code like so:

 StreamReader r = new StreamReader("Assets/XML/"+xmlName    );
 System.Xml.XmlTextReader xr = new System.Xml.XmlTextReader(r.BaseStream);

Is there a reason why this doesn't work on a deployed app? What would be the correct way? Thanks for any help!