i work with Oxygen XMLTester for xPath selectors, supporting XPath 2.0 specification. So i wonder if there is any online tester working with XPath 2.0 spec.?
<http://www.xmlme.com/XpathTool.aspx>[http://www.xmlme.com/XpathTool.aspx][2]
<http://www.xpathtester.com/test>[http://www.xpathtester.com/test][3]

Those above-mentioned testers failed to take the following XPAth (2.0 rather succeded):**/list/sum(item/prices/price[@currency='USD'])** with XML:

```
<list>
   <item new='true'>
     <title lang="en">Pop-Music DVD</title>
     <author >K. A. Bred</author>
     <year>2012</year>
     <prices>
       <price currency="USD">29.99</price>
       <price currency="EUR">23.2</price>
     </prices>
   </item>
   <item new='false'>
    <title>Gone with the wind</title>
    <author>M. Mitchell</author>
    <year>1936</year>
    <prices>
      <price currency="USD">19.05</price>
      <price currency="EUR">15</price>
    </prices>
  </item>
</list>

```