[Zope] newbie : req.AUTHENTICATED_USER.has_permission

[cyrille]

hello,
again a newbie question :

After creating a Page Template,
I go in security options and put Manage Properties ON for all roles 
(Anonymous, ...)

in da page I put a line :

    Manage Properties here : <span tal:replace="structure
        python:here.REQUEST.AUTHENTICATED_USER.has_permission('Manage 
Properties', here)"
        />

If I display the page when login as a Manager the result is :
    Manage Properties here : 1
that's OK.
But when displaying the page with a anonymous connection I get result :
    Manage Properties here : None

Why ?
Because, I repeat that I change security option to add Manage Properties 
for Anonymous and all other roles.

Thanks,
Cyrille