You have to e in the latest 1.9 snapshot for it to work!
Note: Minify the command to avoid issues :)
Sword Of The Summer
JJJ_321 IN YOUR WORLD!!!!!!!!!!!!!!!!!!!!!
Super Cool Black Head!
Flash suit!
God Armor Kit
BECOME IRON MAN WITH ONE COMMAND! NO MODS!
DIRT CHEST
OP GOD Armor Set