xforms - select1 itemset+insert - supported?

The following works up to the insert.  Is a select1 itemset 'insert'
not supported then as yet or has my code got bugs in it?

Standard routine of initialising a select1 with instance data (using
itemset) with insert/delete procs as well e.g.:


<xf:model id="listitems">
  <xf:instance>
	<data xmlns="">
		<listitem>1</listitem>
		<listitem>2</listitem>
		<listitem>3</listitem>
	</data>
  </xf:instance>
</xf:model>

<xf:select1>
  <xf:label>Choose</xf:label>
  <xf:itemset model="listitems" nodeset="/data/listitem">
    <xf:label ref="."/>
    <xf:value ref="."/>
  </xf:itemset>
</xf:select1>

<xf:trigger>
  <xf:label>Insert</xf:label>
  <xf:action ev:event="DOMActivate">
	<xf:insert model="listitems" nodeset="/data/listitem" at="1"
position="before"/>
	<xf:setvalue ref="/data/listitem[1]">0</xf:setvalue>
  </xf:action>  
</xf:trigger>


Thx (xforms is awsome :)


GSO