Top-Level Navigation content problem

I have a bsp iview. I had inserted this iview in the first position of

a role. This role has more iviews. The role hava entry point. When I

click in the top-level navigation (role), it launchs the iview but i

can't see the content of the role in the top-level navigation. If I put another kind of iview in the first position. I can see the correct top-level content.

Thanks in advanced.