code: private void restoreNestedVariables() {
  	if (nestedVars != null) {
  	    Iterator iter = nestedVars.iterator();
  	    while (iter.hasNext()) {
  		String varName = (String) iter.next();
  		varName = findAlias(varName);
  		Object obj = originalNestedVars.get(varName);
  		if (obj != null) {
  		    invokingJspCtxt.setAttribute(varName, obj);
  		} else {
  		    invokingJspCtxt.removeAttribute(varName, PAGE_SCOPE);
  		}
  	    }
  	}
      }
docs: Restores the values of any NESTED variables in the invoking JSP
  context.