Don't works, where I'm wrong?

1. I create a page as administrator.
2. A user asks me for be able to update it (OF COURSE! I answered)
3. I set page content type to be -Enable per content node access control settings-
4. I go to the page and I click on -Access Controll- tab
5. I add user in the -Grant view access-, -Grant update access-, Grant delete access,
6. User go to page but no modify button comes out (I tested the problem using his account)
7. I rebuilded the permission at /admin/content/node-settings
8. I opened the node, clicked on modify, re-saved the node
9. I set the the permission of access controll valid for all actio for all the roles
10. I tested that user see the node as I did not at all

If may be useful: I have installed in my drupal forum access, content profile, and obviously ACL.

help