Event Script

I am trying to use two event scripts at the same time but I can't figure out how to combine can someone help.
the top part works, the problem is with the redirect I get this error ( Parse error: parse error, unexpected $ )
function AfterSuccessfulLogin()

{

//** Custom code ****

// put your custom code here
global $data;

$_SESSION["Investigator"] = $data["Investigator"];

$_SESSION["Room"] = $data["Room"];

$_SESSION["CustomerNo"] = $data["CustomerNo"];

$_SESSION["Email"] = $data["Email"];

$_SESSION["Department"] = $data["Department"];

$_SESSION["CC Expires"] = $data["CC Expires"];

$_SESSION["Phone"] = $data["Phone"];

$_SESSION["PO"] = $data["PO"];

$_SESSION["PO Expires"] = $data["PO Expires"];
//** Redirect to another page ****



if ($_SESSION["GroupID"]=="Admin")

{

header("Location: _OrderForm_add.php");

exit();

}

else if ($_SESSION["GroupID"]=="User")

{

header("Location: _OrderForm_add.php");

exit();

}

else if ($_SESSION["GroupID"]=="Airgas")

{

header("Location: _OrderForm_list2.php");

exit();
}