Here is the XML

How using E4X read values of nodes

<status>??</status>

and of node <invisible value="false"/> ?

<?xml version="1.0" encoding="utf-8"?>
<s:Application xmlns:fx="http://ns.adobe.com/mxml/2009" 
               xmlns:s="library://ns.adobe.com/flex/spark" creationComplete="init()">
    <fx:Declarations>
        <!-- Place non-visual elements (e.g., services, value objects) here -->
    </fx:Declarations>
    <fx:Script>
        <![CDATA[

            var xml:XML = 
                <iq type="result" id="ss-1">
                  <query status-min-ver="1" status-max="512" status-list-contents-max="5" status-list-max="3" xmlns="google:shared-status">
                    <status>
                      ??
                    </status>
                    <show>
                      default
                    </show>
                    <status-list show="default">
                      <status>
                        ??
                      </status>
                      <status>
                        ?
                      </status>
                      <status>
                        ??
                      </status>
                    </status-list>
                    <status-list show="dnd">
                      <status>
                        ??
                      </status>
                      <status>
                        dnd, i have bad mood
                      </status>
                      <status>
                        showering
                      </status>
                      <status>
                        ??_???¦
                      </status>
                      <status>
                        ?
                      </status>
                    </status-list>
                    <invisible value="false"/>
                  </query>
                </iq>

            public function init() {
                trace(xml.query.invisible.@value);
            }
        ]]>
    </fx:Script>
</s:Application>