I want permission permission on on damage

[koucha]

Skript Version 2.２
Skript Author SkriptLang
Minecraft Version 1.8

on damage:
    if attacker have permission "hikari":
        name of victim contains "dark"
        damage victim by damage * 2
        message "&etest!"
    else:
        message "&etest!!!!"

I do not get an error, but it does not work

 

[Donut]

you have specify attacker or victim for messages

message "&etest!" to attacker