Need help with projectile skill

ElemetnalWater:
  Mobtype: SKELETON
  Skills:
  - skill{s=WaterAttack} @Target ~onTimer:100

WaterAttack:
  Skills:
  -skill:projectile{onTick=WaterTick;onHit=WaterHit;onEnd=WaterEnd;v=3;mr=30;hR=1;vR=1} @target
 
WaterTick:
  Skills:
  - effect:particles{p=splash;a=5;hR=0.2;vR=0.2} @origin
 
WaterHit:
  Skills:
  - damage{a=5} @target
 
WaterEnd:
  Skills:
  - effect:particles{p=splash;a=10;hR=0.5;vR=0.2}...