OnAttack aura implemented placeholders not working

Summary

Problem 1

OnAttack aura does not translate the implemented placeholders. Instead it will say it is UNDEFINED

• <skill.var.damage-amount>
• <skill.var.damage-type>
• <skill.var.damage-cause>

Problem 2

Additionally, OnAttack multiplier does not work with target gets hit by your arrow.

Steps to reproduce

Problem 1

1. Use build 5519 MythicMobs on purpur 1.21.8 server
2. Import this skill

test:
  Skills:
    - onAttack{oH=[
      - message{m="Test <skill.var.damage-amount> <skill.var.damage-type> <skill.var.damage-cause>"} @Self
      ];cE=false;auraname=ajwojrw;sync=true} @Self

3. Use the command /mm test cast test
4. Attack a mob

Problem 2

1. Use build 5519 MythicMobs on purpur 1.21.8 server
2. Import this skill

test2:
  Skills:
    - onAttack{oH=yayayayye;cE=false;auraname=ajwojrw;sync=true;d=40;multiplier=10;type=PROJECTILE} @Self
      
yayayayye:
  Skills:
    - message{m="Test <skill.var.damage-amount> <skill.var.damage-type> <skill.var.damage-cause>"} @Self

3. Use the command /mm test cast test
4. Shoot an arrow with a bow

Current behavior

• Currently it will just show for all the 3 placeholders UNDEFINED instead of the damage output.
• Bows don't get the multiplier damage, only works with melee

Intended correct behavior

Translating those placeholders correctly. Bows should work with damage multiplier of OnAttack.