The Session variable issue in mysql select statement

[sarfraz khan]

Can anyone help me whith why thi s code does not work:

<?php require_once('Connections/ActionAssessing.php'); ?>
<?php
//initialize the session
if (!isset($_SESSION)) {
session_start();
}
mysql_select_db($database_ActionAssessing, $ActionAssessing);
$query_rsClaim = "select ClaimID, Rego, UserID, ClaimNo FROM claim INNER JOIN users ON (users.UserID = users.UserID) WHERE
Rego = ".$_SESSION['Rego']." AND ClaimNo = ".$_SESSION['ClaimNo']." AND UserName = ".$_SESSION['kt_login_user']."";
$rsClaim = mysql_query($query_rsClaim, $ActionAssessing) or die(mysql_error());
$row_rsClaim = mysql_fetch_assoc($rsClaim);
$totalRows_rsClaim = mysql_num_rows($rsClaim);
echo $row_rsClaim['ClaimID'];
?>

Returns the following error:

You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'AND ClaimNo = AND UserName =' at line 2

Thanks in advance.
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