C est normal , voilà :p :
On rightclick with paper :
player has permission "menu.use"
player is holding a paper named "Menu"
open chest with 3 row named "Menu" to player
wait 1 tick
# vide
format slot 0 of player with glass named "x" to be unstealable
format slot 1 of player with glass named "x" to be unstealable
format slot 2 of player with glass named "x" to be unstealable
format slot 3 of player with glass named "x" to be unstealable
format slot 4 of player with glass named "x" to be unstealable
format slot 5 of player with glass named "x" to be unstealable
format slot 6 of player with glass named "x" to be unstealable
format slot 7 of player with glass named "x" to be unstealable
format slot 8 of player with glass named "x" to be unstealable
format slot 9 of player with glass named "x" to be unstealable
format slot 10 of player with glass named "x" to be unstealable
format slot 11 of player with glass named "x" to be unstealable
format slot 15 of player with glass named "x" to be unstealable
format slot 16 of player with glass named "x" to be unstealable
format slot 17 of player with glass named "x" to be unstealable
format slot 18 of player with glass named "x" to be unstealable
format slot 19 of player with glass named "x" to be unstealable
format slot 20 of player with glass named "x" to be unstealable
format slot 21 of player with glass named "x" to be unstealable
format slot 22 of player with glass named "x" to be unstealable
format slot 23 of player with glass named "x" to be unstealable
format slot 24 of player with glass named "x" to be unstealable
format slot 25 of player with glass named "x" to be unstealable
format slot 26 of player with glass named "x" to be unstealable
# item
format slot 12 of player with gold ingot named "Tournois" to be unstealable
format slot 13 of player with sunflower named "spawn" to be unstealable
format slot 14 of player with diamond sword named "PvP" to be unstealable
on join:
set slot 4 of the player to A paper named "Menu"