HTML tags in XML

Im trying to use HTML tags in an XML file, but not as nodeValues, I want to use HTML tags inside a node attribute string ie:

// test.xml contents
<?xml version=“1.0” encoding=“utf-8”?>
<root>
<item content=“some text that should render as <b>HTML</b>” />
</root>

// flash AS
var xmlLoad:XML = new XML();
xmlLoad.ignoreWhite = true;
xmlLoad.load(“test.xml”);
xmlLoad.onLoad = function(success) {
if (success) {
trace(“loaded”);
var xmlContent = this.firstChild.childNodes[0].attributes.content;
testTextField.html = true;
testTextField.htmlText = xmlContent;
trace(xmlContent);
} else {
trace(“error”);
}
}

When the tags are in the attribute string, flash returns ‘undefined’, but when I delete them it works ok, but that’s not what I want.

And yes, I’ve tryed <![CDATA[…]]>, and I think it doesn’t work inside a node, or its attribute :/.