XML : How to XML mapping using jxls

http://i.stack.imgur.com/QO7Ca.jpg

Hi. I Used JXLS. I want to mapping a numerical expression How to mapping cell 'D'?

  <mapping row="3" col="0">testVo.a</mapping>  <mapping row="3" col="1">testVo.b</mapping>  <mapping row="3" col="2">testVo.c</mapping>  <mapping row="3" col="3">testVo.d</mapping>  <mapping row="3" col="4">testVo.e</mapping>