Client client = (Client) ContractSpecEditorPackage.eINSTANCE.getContact_Spec_Editor_The_client();
		TransactionalEditingDomain domain = TransactionUtil.getEditingDomain(client);
		
		CommandStack stack = domain.getCommandStack();
		// execute some change, just as in any EMF.Edit application
		Command cmd = domain.createCommand(SetCommand.class,
		       new CommandParameter(client, ContractSpecEditorPackage.Literals.NODE__NAME, "Burt"));
		stack.execute(cmd);

public Object execute(ExecutionEvent event) throws ExecutionException {
		// TODO Auto-generated method stub
		
		IEditorPart editorPart = PlatformUI.getWorkbench().getActiveWorkbenchWindow().getActivePage().getActiveEditor();
		if (editorPart instanceof ContractSpecEditorDiagramEditor) {
			System.out.println("Found Editor");
			ContractSpecEditorDiagramEditor cSEDE = (ContractSpecEditorDiagramEditor) editorPart;		

	        TreeIterator<EObject> allContents = cSEDE.getDiagram().eAllContents();
	        while (allContents.hasNext()) {
	                EObject next = allContents.next();
	                if (next instanceof NodeImpl) {
	                	EObject obj =  ((NodeImpl)next).getElement();
	                	if (obj instanceof ClientImpl){
	                		ClientImpl client = (ClientImpl) obj;
	                		System.out.println("Found Client: " + client.getName());
	                		EditingDomain editingDomain = AdapterFactoryEditingDomain.getEditingDomainFor(client);
	            	        Command cmnd = SetCommand.create(editingDomain, client, ContractSpecEditorPackage.eINSTANCE.getNode_Name(), "Bob");
	            	        try {
	            	        	editingDomain.getCommandStack().execute(cmnd);
	            	        } catch (Exception e) {
	            	            // TODO Auto-generated catch block
	            	            e.printStackTrace();
	            	        }
	            	        System.out.println("New Name is: " + client.getName());	            	    
	                	}
	                }
	        } 
		}

		
		return null;
	}
}