How to use For loop in CruiseControl.net

Looping through parameter values in Cruisecontrol.net

Example >>>>>>>>>>

  <cb:define name="ParentFolders">
    <!--Define parent folders-->
    ['A', 'B', 'C']
  </cb:define>

  <cb:define name="ChildFolders">
    <!--Define child folders-->
    ['aa', 'ab', 'ba', 'bb', 'cc']
  </cb:define>

  <!-- Loop through $(ParentFolders)\$(ChildFolders), do the task only if $(ParentFolders)\$(ChildFolders) exists.-->
  <cb:for-each iterator-name="i" iterator-expr="$(ParentFolders)">
    <cb:for-each iterator-name="j" iterator-expr="$(ChildFolders)">
      <cb:scope ParentFolder="$(i)" ChildFolder="$(j)">
        <conditional>
          <conditions>
            <folderExistsCondition>
              <folder>$(ParentFolder)\$(ChildFolder)</folder>
            </folderExistsCondition>
          </conditions>
          <tasks>

            <!-- Output folder name-->
            <exec>
              <executable>cmd.exe</executable>
              <buildArgs>/c output.bat $(ParentFolder) $(ChildFolder)</buildArgs>
              <baseDirectory>$(WorkDirectory)</baseDirectory>
            </exec>

          </tasks>
        </conditional>
      </cb:scope>
    </cb:for-each>
  </cb:for-each>