<target name="validateDeployment">
  <record name="log.txt" action="start"/>
  <sf:deploy username="${sf-target.username}"
             password="${sf-target.password}"
             serverurl="${sf-prod.serverurl}"
             deployRoot="src"
             checkOnly="true"/>
  <record name="log.txt" action="stop"/>
  <loadfile srcFile="log.txt" property="vid">
    <filterchain>
      <tailfilter lines="1"/>
      <tokenfilter>
        <stringtokenizer suppressdelims="true"/>
        <containsregex pattern="[a-zA-Z0-9]{18}"/>
      </tokenfilter>
    </filterchain>
  </loadfile>
  <propertyfile file="build.properties" >
    <entry  key="sf-prod.validationID" value="${vid}"/>
  </propertyfile>
</target>