xxforms:script bug

> I find a bug with xxforms:script.
>      orbeon version: Orbeon Forms Nightly Build--20080729
>      properties.xml:
>         <property as="xs:boolean" name="oxf.xforms.cache.document"  
> value="false"/>
>
>      view.xhtml:
>           <xforms:trigger>
>               <xforms:label>script</xforms:label>
>               <xforms:action ev:event="DOMActivate">
>                  <xxforms:script>alert('this is xxforms:script');</
> xxforms:script>
>               </xforms:action>
>           </xforms:trigger>
>     when click 'script' trigger, xxforms:script will not run.