Hi Robert,
Seems to me that last line should be like this
if mtool.getAuthenticatedMember().hasRole('Mitarbeiter'):
-James
> portal = context.portal_url.getPortalObject()
> pm = context.getToolByName(portal, 'portal_membership')
> member = pm.getAuthenticatedMember()
>
> if(mtool.getAuthenticatedMember.hasRole( context, ['Mitarbeiter'] )):