variables:
    {G2} = 100
on rightclick holding a paper:
    chance of 1/{G2}:        execute console command "/menu grab %player% q"
        set {G2} to 100
        send "&9>>> &c当選しました！おめでとうございます！"
        make player execute command "/summon fireworks_rocket ~ ~1 ~ {FireworksItem:{id:fireworks,Count:1,tag:{Fireworks:{Explosions:[{Type:0,Colors:[I;16753490],FadeColors:[I;15007580]}]}}}}"
    else:
        send "&9>>> &e残念、ハズレです。只今の当選確率%{G2}%はです"
        subtract 1 from {G2}