RTE inside modal dialog

gistfile1.xml

<xhtml:html xmlns:xforms="http://www.w3.org/2002/xforms"
	 xmlns:f="http://orbeon.org/oxf/xml/formatting" xmlns:xhtml="http://www.w3.org/1999/xhtml"
	 xmlns:xxforms="http://orbeon.org/oxf/xml/xforms" xmlns:xi="http://www.w3.org/2001/XInclude"
	 xmlns:xxi="http://orbeon.org/oxf/xml/xinclude" xmlns:xs="http://www.w3.org/2001/XMLSchema"
	 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:widget="http://orbeon.org/oxf/xml/widget"
	 xmlns:ev="http://www.w3.org/2001/xml-events" xmlns:xdt="http://www.w3.org/2005/xpath-datatypes"
	 xmlns:xbl="http://www.w3.org/ns/xbl" xmlns:fr="http://orbeon.org/oxf/xml/form-runner">

	<xhtml:head>
		<xforms:model	id="main"
					xxforms:session-heartbeat="true"
					xxforms:show-error-dialog="true">

			<xforms:instance id="instance">
	            <dynamic>
	               <textarea1>Area1</textarea1>
	               <textarea2>Area2</textarea2>
	            </dynamic>
			</xforms:instance>
			
			<xforms:instance id="instance-modal-path">
			     <root>
			         <selectedNode></selectedNode>
			     </root>
			</xforms:instance>
		
		</xforms:model>
    </xhtml:head>
    
	<xhtml:body class="body">

	   <xforms:input ref="textarea1">
	       <xforms:label>Text Area 1</xforms:label>
	       <xxforms:show ev:event="DOMFocusIn" dialog="hello-dialog"></xxforms:show>
	   </xforms:input>

       <xhtml:br />
       
	   <xforms:input ref="textarea2">
	       <xforms:label>Text Area 2</xforms:label>
	       <xforms:setvalue ev:event="DOMFocusIn" ref="instance('instance-modal-path')/selectedNode" value="context()/saxon:path()" />
	       <xxforms:show ev:event="DOMFocusIn" dialog="hello-dialog"></xxforms:show>
	   </xforms:input>
	   
	   <xxforms:dialog id="hello-dialog">
          <xhtml:div>
            <xforms:textarea mediatype="text/html" ref="if(normalize-space(xxforms:instance('instance-modal-path')/selectedNode) != '') then saxon:evaluate(instance('instance-modal-path')/selectedNode) else instance('instance')/textarea1" />
          </xhtml:div>
       </xxforms:dialog>

	</xhtml:body>	    
	
</xhtml:html>