Roles and menu

I am having a problem getting roles to work.

I have a menu that gets its details from a sitemap file.


<siteMapNode url="~/default.aspx" roles="customeruser" title="Home" description="Customer home">
    <siteMapNode url="~/customer/customerhome.aspx" title="Home" description="Customer home" />
    <siteMapNode url="~/customer/productinformation.aspx" title="Product sheets" description="Find a product sheet" /> 
    <siteMapNode url="~/customer/logcontact.aspx" title="Log contact" description="Log details of a contact" /> 
    <siteMapNode title="Reports" roles="customermanager" description="Display a report"> 
     &nbs ...