How to Open Another Menu in Menu

• Main Nodes

[open]
[close]

open:
  index: 21
  name: '   &8[&cOpen Sub-Menu.yml&8]'
  material: ARROW
  lore:
    - "&f- Open sub-menu.yml"
    - "&f- Need to fill menu filename.yml"
    - "&f- .yml can be written or not"
  isEnchant: false
  custom-model-data: 0
  commands:
    - '[open] test'

open:
  index: 22
  name: '   &8[&cClose Menu&8]'
  material: ARROW
  lore:
    - "&f- Close current menu"
  isEnchant: false
  custom-model-data: 0
  commands:
    - '[close]'