Solved Player's attack damage

[blockminer]

i want to send attack damage and so i typed like this

message "%player's attack damage%" to player

but it didn't work
what i want is like this:
If player is holding diamond sword:message "7"
how i can send player's attack damage like this?

 

[Haloxx]

on damage:
  if attacker is holding a diamond sword:
    set {_damage} to damage
    message "%{_damage}%" to attacker

this could probably be better but i tested it and it works fine

 

[blockminer]

on damage:
  if attacker is holding a diamond sword:
    set {_damage} to damage
    message "%{_damage}%" to attacker

this could probably be better but i tested it and it works fine

thanks it worked