on damage of a player:
    attacker is player
    set {_attack} to a random integer between 1 and 2
    if {_attack} is 1:
        message "&a>>&c%damage%&aダメージを与えた！" to attacker
    if {_attack} is 2:
        message "&a>>&c%damage%&aダメージを与えた！" to attacker