Bug 123207 PropertyHandle items cannot be moved down
Use the property handle to move down the item. It seems not work.
UI/org.eclipse.birt.report.designer.ui/src/org/eclipse/birt/report/designer/internal/ui/dialogs/PropertyHandleTableViewer.java
}
        
        if(showMenus)
        {
            menu = new Menu(viewer.getTable());
            menu.addMenuListener(new MenuAdapter(){
                public void menuShown(MenuEvent e)
                {
                    viewer.cancelEditing();
                }
            });
            itmRemove = new MenuItem(menu, SWT.NONE);
            itmRemove .setText(Messages.getString("PropertyHandleTableViewer.Menu.Remove")); 
            itmRemove .addSelectionListener(new SelectionAdapter(){
                public void widgetSelected(SelectionEvent e)
                {
                    removeSelectedItem();
                }
            });
            itmRemoveAll = new MenuItem(menu, SWT.NONE);
            itmRemoveAll.setText(Messages.getString("PropertyHandleTableViewer.Menu.RemoveAll")); 
            itmRemoveAll.addSelectionListener(new SelectionAdapter(){
                public void widgetSelected(SelectionEvent e)
                {
                    try
                    {
                        PropertyHandle handle = (PropertyHandle) viewer.getInput();
                        handle.clearValue();
                        viewer.refresh();
                    }