Menu and Master Page

I'm trying to access menus I placed on a master page. based on user levels I want to show which menu belongs to which level.

On my home page I have the following on the load event.

Dim InqMenu As System.Web.UI.WebControls.Menu = CType(myMaster.FindControl("MenuControl1"), Menu)
InqMenu.Visible = True

I just trying to test with this to display the menu that I set the visible to False.

I get an error saying "unable to cast of type ASP.menucontrol_ascx' to type 'System.Web.UI.Wecontrols.Menu'

I am currently accessing lables on my master page with no problem.

Any help would be appreciated.

Thanks