private void setBundle(VpePageContext pageContext, Element sourceElement) {
   String basename = sourceElement.getAttribute(ATTR_BASENAME);
   String var = sourceElement.getAttribute(ATTR_VAR);
   BundleMap bundle = pageContext.getBundle();
   if (basename != null && basename.length() > 0 && var != null && var.length() > 0) {
     bundle.changeBundle(sourceElement.hashCode(), var, basename);
   } else {
     bundle.removeBundle(sourceElement.hashCode());
   }
 }