[introzen]

pawn Code:

new Float:faPlayerHealth[MAX_PLAYERS];  // float-array storing all players health.

public OnPlayerUpdate(playerid)
{
    new Float:fHealth;

    GetPlayerHealth(playerid, fHealth);

    if(fHealth != faPlayerHealth[playerid])
    {
      // Player health has changed since last update from player -> server, so obviously thats the thing updated.
      // Lets do further checks see if he've lost or gain health, anti health cheat? ;-)

      if(fHealth > faPlayerHealth[playerid])
      {
        /* He've gained health! Cheating? Write your own scripts here to figure how a player
            gained health! */
      }
    else if((fHealth - faPlayerHealth[playerid]) > 40)
      {
        SetPlayerHealth(playerid,0);
      }

      faPlayerHealth[playerid] = fHealth;
    }
}

That didn't work...

It's supposed to kill the player if he looses more then 40 hp on the update...