Galera, eu queria uma ajuda de vcs pra me ajudar numa spells aqui, ela funciona, porém qnd usa, o player toma debug.

Spell:

local combat = createCombatObject()
setCombatParam(combat, COMBAT_PARAM_EFFECT, CONST_ME_MAGIC_RED)
setCombatParam(combat, COMBAT_PARAM_AGGRESSIVE, FALSE)
setCombatParam(combat, COMBAT_PARAM_DISTANCEEFFECT, CONST_ANI_DEATH)

function onCastSpell(cid, var)
local target = getCreatureTarget(cid)
if (isPlayer(target)) then
    if (getCreatureHealth(target) > getCreatureMaxHealth(target) * 0.2) then
        doPlayerSendTextMessage(cid, MESSAGE_EVENT_DEFAULT, "O alvo tem que estar com menos de 20% da vida.")
    return false
    end
else
    doPlayerSendTextMessage(cid, MESSAGE_EVENT_DEFAULT, "Você só pode usar em jogadores.")
return false
end
    local storage = 23011
        local hp = -100000
    local chance = math.random(1, 4)
    local mana = getPlayerMaxMana(cid) *-1.0

        if exhaustion.check(cid, storage) == false then
        if chance == 1 then
        doSendMagicEffect(getPlayerPosition(cid), 49)
        doCreatureAddHealth(target, hp)
                return doCombat(cid, combat, var)
          elseif chance == 2 then
                doSendMagicEffect(getPlayerPosition(cid), 49)
        doCreatureAddHealth(target, hp)
                return doCombat(cid, combat, var)
          elseif chance == 3 then
                doSendMagicEffect(getPlayerPosition(cid), 49)
        doCreatureAddHealth(target, hp)
                return doCombat(cid, combat, var)
          
        elseif chance == 4 then
                doSendMagicEffect(getPlayerPosition(cid), 2)
                doPlayerSendCancel(cid, "MISS!")
                doCreatureAddMana(cid, mana)
                end
end
end