Co jest w tym skrypcie źle

tak jak w temacie 

variables:
       {bd::%player%} = 0

on join:
    set {1} to a random integer between 1 and 9 
    set {2} to a random integer between 1 and 9 
    set {3} to a random integer between 1 and 9 
    set {4} to a random integer between 1 and 9 
    set "%{1}%%{2}%%{3}%%{4}%" to "{bd::%player%}" 
    
command /pokaz
    trigger:
        send "&c%{bd::%player%}%"

proszę o podpowiedź