on damageでアタッカーとして敵にダメージを入れたい

on damage:
    if uncoloured name of attacker's tool is "護身用短剣":
        cancel event
        make attacker damage victim by 3

on damage:
    if uncoloured name of attacker's tool is "護身用短剣":
        cancel event
        make attacker damage victim by 3

on damage:
    if uncoloured name of attacker's tool is "護身用短剣":
        cancel event
        set damage to 3

on damage:
    if uncoloured name of attacker's tool is "護身用短剣":
        cancel event
        set damage to 3