Page Access by Membership Type

With regards to the Membership Manager Plugin - I have a list type radio button field called "type" with 3 options: customer, employee and accounting. Below is the code I used to restrict access to the page to members "type" equal to "accounting":

<?php require_once "../cm/lib/viewer_functions.php";
if (!$CURRENT_USER) { websiteLogin_redirectToLogin(); }
if ($CURRENT_USER['type'] == "customer") {redirectBrowserToURL('/customer/index.htm'); }
if ($CURRENT_USER['type'] == "employee") {redirectBrowserToURL('/index.htm'); }
?>

Although the code works, it is not logical to have to list each list type with a redirect if the type is other than "accounting".

I was hoping the code below would work, but it did not. Members with type "customer" can still view the page that should be restricted for member type "accounting" only.

<?php require_once "../cm/lib/viewer_functions.php";
if (!$CURRENT_USER) { websiteLogin_redirectToLogin(); }
if (!$CURRENT_USER['type'] == "accounting") {redirectBrowserToURL('/index.htm'); }
?>

Please advice how to best handle this.