(Resolvido)pegando key do bau

segue imagens com script

local combat = createCombatObject()
setCombatParam(combat, COMBAT_PARAM_TYPE, COMBAT_PHYSICALDAMAGE)
setCombatParam(combat, COMBAT_PARAM_EFFECT, CONST_ME_HITAREA)
setCombatParam(combat, COMBAT_PARAM_USECHARGES, true)

local area = createCombatArea(AREA_SQUARE1X1)
setCombatArea(combat, area)

function onGetFormulaValues(cid, level, skill, attack, factor)
    local skillTotal, levelTotal = skill, level / 5
    return -(skillTotal * 0.5 + levelTotal), -(skillTotal * 1.5 + levelTotal)
end

setCombatCallback(combat, CALLBACK_PARAM_SKILLVALUE, "onGetFormulaValues")
function onCastSpell(cid, var)
    return doCombat(cid, combat, var)
end