条件をつけると機能しない

on join:
    set {centhe2.skill.%player%} to 1

on damage:
    if 0 < {centhe2.skill.%attacker%}:
        if attacker is not a player:
            send "A" to victim
            set {_fd} to damage
            set damage to {_fd} * 0.1
        if attacker is player:
            send "B" to attacker

on join:
    set {centhe2.skill.%player%} to 1

on damage:
    if 0 < {centhe2.skill.%attacker%}:
        if attacker is not a player:
            send "A" to victim
            set {_fd} to damage
            set damage to {_fd} * 0.1
        if attacker is player:
            send "B" to attacker