How to copy Representation of CAD Document to WTPart

Hello All,

We have a requirement to copy Representation from CAD Document to its associated WTPart.

I want to do this through code because if I set preference Build Associated Parts to Yes it is creating Structure of the CAD Document on WTPart and this is not required.

I am trying this way and it is not working.

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wtpart = (WTPart) factory.getReference("OR:wt.part.WTPart:414184331").getObject();

qr_new = PersistenceHelper.manager.navigate(wtpart, EPMBuildRule.BUILD_SOURCE_ROLE, EPMBuildRule.class,true);

if(qr_new.hasMoreElements())

{

  epm = (EPMDocument) qr_new.nextElement();

  Representation rep_pub = PublishUtils.getRepresentation(epm);

  RepresentationHelper.service.storeRepresentation(rep_pub, wtpart, null, rep_pub.getDescription(), rep_pub.getRepresentationType());

  PersistenceHelper.manager.refresh(wtpart);

}

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Please let me know if any one has done copy of Representation from CAD Document to WTPart.

Thanks,

Niranjan M