session value is not sharing across multiple pages

[callmubashar]

Hi,

Please help me, I m working perfeclty right on my local system, but when i upload my pages to host, the session variables are not sharing across multiple pages, my code is

if(isset($_POST['txtLogin'])){
	$Login = $_POST['txtLogin'];

	$_SESSION['UserLogin'] = $Login;
	header("Location: test.php");

}

and on the test.php the code is

if(isset($_SESSION['UserLogin'])){

echo "Ok: login seccessfully with <b>$_SESSION[UserLogin]<b>";
}

but the there is nothing on test.php........

help me asap.
Thanks,

[weekender]

you have to call

session_start()

at the top of each page for that page to have the session