manifest archive issue

[sanju]

I am trying to add archive configuration but that is not helping ( it is not 
adding/updating manifest file generated as part of the war).

<archive>
                                                           <manifest>
                                                                
<addDefaultImplementationEntries>true</addDefaultImplementationEntries>
                                                                
<addDefaultSpecificationEntries>true</addDefaultSpecificationEntries>
                                                        </manifest>
                                </archive>    


Can anyone suggest what could be wrong here ?


-Sanju