Map the field values in Jasper report

[dheeraj.madhu]

Hi, Is it posible to map the values while generating the reports?
Suppose if we have following xml

<response id="1074200577">                                                                                                                                             <results id1="0" id2="0">                                                                                                                                                <field count="7556">one</field>                                                                                                                                    <field count="7524">two</field>                                                                                                                                    <field count="7402">three</field>                                                                                                                                  <field count="7304">four</field>                                                                                                                             </results>                                                                                                                                                     </response>    [/code]

Generating the Report will give this as
 

one	7556
two	7523
three	7402
four	7304

However i dont want the names as in the input xml rather i want them to be mapped to different name as

Name 1	7556
Name 2	7523
Name 3	7402
Name 4	7304

I tried to do this by inserting the mapped names to Paramerter map. But i was unable to get the new name and set it
I tried to do following code

        <textFieldExpression><![CDATA[$P{[$F{field}]}]]></textFieldExpression>[/code]

But this doesn't work. How to get the map value depending on a key and replace the value in a report?