If you want your character to recover to 500 live points it's a bit harder because here you can't use the mp-tag anymore.  Instead, you have to use a negative itr with state: 18 so you can hit yourself (to hide the burning_smoke you have to edit broken_weapon.dat here).

<frame> 50 heal500
   pic: 1000  state: 18  wait: 2  next: 1000  dvx: 0  dvy: 0  dvz: 0
   centerx: 0  centery: 0  hit_a: 0  hit_d: 0  hit_j: 0
  itr:
   kind: 0  x: -20  y: 980  w: 40  h: 40  dvx: 0
   fall: -1  vrest: 10  bdefend: -1  injury: -500   
  itr_end:
<frame_end>

But you don't want your character to go to the injured-frames, so be sure to use make both the "bdefend" and "fall" values -1! The rest is easy: let the weapon fall down, activate the milk behind the character, use state: 17 for a short time and delete the milk from the game.

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