Problem in copy task with filtering

[Narayanan, Latchoumi]

> Hi all,
> 
> In my build script I am using,
> 
> <copy file="${webapp.home}/WEB-INF/web.xml"
> toFile="${build.root}/WEB-INF/web.xml"
>                                  filtering="on" overwrite="true">
>   <filterset>
>        <filter token="spoofFilter" value="permissionFilter"/>
>   </filterset>
> </copy>
> 
> This code is copying the web.xml file, but not replacing the word
> "spoofFilter" with "permissionFilter" as I am trying to do,
> Can someone tell me what I am doing wrong here.
> 
> Thanks,
> Latchoumi