Need Help for Menu blueprint

Hi at all,

can someone help me with Menu builders blueprint. I try it what is writen in the cookbook.
i set following in the site.yml:

title: Site
preset: pages
unlisted: true
nestedMenu:
  type: structure
  label: Nested menu
  fields:
    menufields: fields/menufields
    hasSubmenu:
      type: toggle
      text: Add a submenu?
    submenu:
      type: structure
      label: Second Level Items
      when:
        hasSubmenu: true
      fields:
        menufields: fields/menufields

But nothing is shown in the panel, where i can create menus. Have anyone a tip for me, what i make wrong.

Don’t use the pages preset:

title: Site

sections:
  listed:
    type: pages
  fields:
    type: fields
    fields:
      nestedMenu:
        type: structure
        label: Nested menu
        fields:
          menufields: fields/menufields
          hasSubmenu:
            type: toggle
            text: Add a submenu?
          submenu:
            type: structure
            label: Second Level Items
            when:
              hasSubmenu: true
            fields:
              menufields: fields/menufields

Add additional sections/columns/tabs as needed.

Wow thank you, now its works. I found Kirby is one of the best CMS System i found. I try to understand and i hope i will you not going on your nerv with my stupid questions.