title: Replace/Update a existing node value in groovy
body: <p>Below is my sample xml.</p>
  
  <pre><code>&lt;SOAP-ENV:Envelope xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/"&gt;    &lt;SOAP-ENV:Header&gt;
        &lt;MessageHeader xmlns:ns3="http://csi.cingular.com/CSI/Namespaces/Types/Public/CingularDataModel.xsd" xmlns:ns39="http://csi.cingular.com/CSI/Namespaces/Types/Public/MessageHeader.xsd"&gt;
           &lt;ns39:TrackingMessageHeader&gt;
              &lt;ns3:infrastructureVersion&gt;86&lt;/ns3:infrastructureVersion&gt;
              &lt;ns3:version&gt;222&lt;/ns3:version&gt;
              &lt;ns3:messageId&gt;146100035386400076&lt;/ns3:messageId&gt;
              &lt;ns3:originatorId&gt;PEEPS&lt;/ns3:originatorId&gt;
              &lt;ns3:timeToLive&gt;120000&lt;/ns3:timeToLive&gt;
              &lt;ns3:dateTimeStamp&gt;2016-04-18T20:16:19.387Z&lt;/ns3:dateTimeStamp&gt;
           &lt;/ns39:TrackingMessageHeader&gt;
           &lt;ns39:SecurityMessageHeader&gt;
              &lt;ns3:userName&gt;&lt;/ns3:userName&gt;
              &lt;ns3:userPassword&gt;&lt;/ns3:userPassword&gt;
           &lt;/ns39:SecurityMessageHeader&gt;
           &lt;ns39:SequenceMessageHeader&gt;
              &lt;ns3:sequenceNumber&gt;1&lt;/ns3:sequenceNumber&gt;
              &lt;ns3:totalInSequence&gt;1&lt;/ns3:totalInSequence&gt;
           &lt;/ns39:SequenceMessageHeader&gt;
        &lt;/MessageHeader&gt;    &lt;/SOAP-ENV:Header&gt;    &lt;SOAP-ENV:Body&gt;
        &lt;InquireEnterpriseOrderListRequest xmlns="http://csi.cingular.com/CSI/Namespaces/InquireEnterpriseOrderListRequest.xsd"&gt;
           &lt;SelectionCriteria&gt;
              &lt;organizationId&gt;214256542&lt;/organizationId&gt;
           &lt;/SelectionCriteria&gt;
        &lt;/InquireEnterpriseOrderListRequest&gt;    &lt;/SOAP-ENV:Body&gt; &lt;/SOAP-ENV:Envelope&gt;
  </code></pre>
  
  <p>I want to replace "organizationId" this tag value with the value read from file and trigger it using <code>testRunner.runTestStepByName("InquireEnterpriseOrderList")</code> once the value is updated in the node. </p>
  
  <p>Can any help in understanding how to update/replace node with new value and re-trigger the API to capture result for many inputs.</p>