xpath

how do i get the build without a ".z" where application id is 1 using the
xml file below. Please help me with this xpath!!

am using :

var sQuery = "//builds/build[not( contains( @Number,
'.z' ) )][applications/application[@id='1']]";

but doesn't seem to work.


<buildscomponents>
    <builds>
        <build id="297" number="2.17.z" releasedate="">
        <applications>
              <application id="1" />
          </applications>
      </build>
     <build id="296" number="2.16.z" releasedate="">
        <applications>
              <application id="1" />
          </applications>
      </build>
     <build id="207" number="2.15.z" releasedate="">
        <applications>
              <application id="1" />
          </applications>
      </build>
    <build id="356" number="2.15.3" releasedate="">
        <applications>
              <application id="1" />
        </applications>
      </build>
<buildscomponents>


Thanks,
Stevenson Ngila
Footman-Walker Associates Ltd
http://www.footman-walker.co.uk



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