hi friends i have facing a problem

<? define('DIR_WS_INCLUDES', 'includes/');
   define('DIR_WS_LANGUAGES', DIR_WS_INCLUDES . 'lang/');
define('DEFAULT_LANGUAGE',''english); ?>

these are code use in configure.php it is use in index.php with following code

<? include_once(DIR_WS_LANGUAGES.DEFAULT_LANGUAGE.'.php') ;?>

now i want to use this with select language i select language

<? if(isset($_GET['flag'])){
          if ($_GET['flag']==po){
		 echo  $_SESSION['language']=polish;} 
		  else{
		  echo $_SESSION['language']=english;}} ?>

now i get value language in $_SESSION but i want to get value of this session in

<? include_once(DIR_WS_LANGUAGES.DEFAULT_LANGUAGE.'.php') ;?>

instead of DEFAULT_LANGUAGE HOWS DONT KNOW

PLEASE help me

<?php 
  include_once(DIR_WS_LANGUAGES . $_SESSION['language'] . '.php') ;
?>
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