PHP how to save checked values in session and show it on other page

I need Your help Ihave table that in each line there is a checkbox I want if user check any line the value stock in session and use it in other page like show it ( just test to make sure that it works )

 <?php                  
                  $Police = $_SESSION['N_Police'];

                $sql = 'SELECT * FROM facture WHERE Client='.$Police;  
                $lst = mysql_query($sql);
            ?>
            <?php
                while ($fact = mysql_fetch_array($lst))
                {
            ?>

            <?php if (strcmp(($fact['Etat']),("Payé"))) { ?>
                    <tr style="background:White;">
            <?php } else if (strcmp(($fact['Etat']),("Non Payé"))) { ?>
                    <tr style="background:#FFCC77;">
            <?php } ?>
                    <td width="5%"> <form method="post"><input Type="checkbox" name="cle['<?php echo $fact['NumFacture']; ?>']" Value="<?php echo $fact['NumFacture']; ?>"></form></td>
                    <td>  <?php echo $fact['NumFacture']; ?>  </td>
                    <td>  <?php echo $fact['Mois'].'-'.$fact['Annee']; ?>  </td>
                    <td>  <?php echo $fact['Montant']; ?>  </td>
                    <td>  <?php echo $fact['Dernier delai']; ?>  </td>
                    <td>  <?php echo $fact['Etat']; ?>  </td>
                </tr>

            <?php
                }
                mysql_free_result($lst);
                mysql_close();
            ?>

and I use thios code to save int the same page :

<?php 

     if (isset($_POST)){
         foreach ($_POST['cle'] as $key => $value){
            $_SESSION['cle'] = $_POST["cle"];
         }

    }
        ?>

and in the other page that I want it to show I use this code :

<?php
 session_start();
 if (isset($_SESSION["cle"])) {
     foreach ($_SESSION['cle'] as  $key => $value)
     echo "<b>Your games are: </b>"  . $_SESSION["cle"];
}
?>

but didn t work just in informe : there is session_start in my first page also.