Lua Critical damage not normal to monsters which absorb element

[KingKing]

Hello,

I am using this script (creature script) for critical hit on monsters and players.
but i found something weird.
when i hit a monster with
a weapon its basic dmg is 100
a monster with

<element holyPercent="50"/>

a critical dmg amount is 100% extra
the damage to this monster should be 50 if no critical and 100 if critical.
but i found all damages to this monster = 50 even if it is critical.
i don't know what is the problem.
any help?

TFS 0.4

Monster file

<?xml version="1.0" encoding="UTF-8"?>
  <monster name="Training Monk" species="human" tp="1" nameDescription="a training monk" race="blood" experience="200" speed="0" manacost="600">
    <health now="1000000" max="1000000"/>
    <look type="57" head="20" body="30" legs="40" feet="50" corpse="3128"/>
    <targetchange interval="60000" chance="0"/>
    <strategy attack="100" defense="0"/>
    <flags>
      <flag summonable="0"/>
      <flag attackable="1"/>
      <flag hostile="1"/>
      <flag illusionable="1"/>
      <flag convinceable="1"/>
      <flag pushable="0"/>
      <flag canpushitems="1"/>
      <flag staticattack="50"/>
      <flag lightlevel="0"/>
      <flag lightcolor="0"/>
      <flag targetdistance="1"/>
      <flag runonhealth="0"/>
    </flags>
  <elements>
    <element holyPercent="50"/>
  </elements>     
    <script>
      <event name="Critical"/>
    </script>
    <attacks>
      <attack name="Heal Friend" interval="6000" chance="60" min="600" max="1000"/> 
      <attack name="melee" interval="2000" min="-0" max="-1"/>
    </attacks>
    <defenses armor="30" defense="31">
     <defense name="healing" interval="1500" chance="100" min="1000000" max="1000000">
            <attribute key="areaEffect" value="blueshimmer"/>
        </defense>
    </defenses>
    <immunities>
      <immunity physical="0"/>
      <immunity energy="0"/>
      <immunity fire="0"/>
      <immunity poison="0"/>
      <immunity lifedrain="0"/>
      <immunity paralyze="0"/>
      <immunity outfit="0"/>
      <immunity drunk="0"/>
      <immunity invisible="1"/>
    </immunities>
    <voices interval="2000" chance="5">
      <voice sentence="i'm healing you"/>
      <voice sentence="Are you so weak?"/>
      <voice sentence="i dont want to kill you you are to easy"/>
    </voices>
    <loot>
    </loot>
  </monster>

Script file

local creature_table = {}
local lvlcrit = 16221 -- storage (the same like givecritical.lua script)
local chance = 10 -- critical chance = 10%

function onStatsChange(cid, attacker, type, combat, value)
 
  if not isPlayer(attacker) then
    return true
  elseif cid == attacker then
    return true
  end
 
  if not creature_table[cid] then
    creature_table[cid] = false
  elseif creature_table[cid] == true then
    creature_table[cid] = false
    return true
  end
 
  if getPlayerStorageValue(attacker, lvlcrit) < 1 then
    return true
  end

  if (math.random(0, 100) <= chance) then
    if type == STATSCHANGE_HEALTHLOSS or type == STATSCHANGE_MANALOSS then     
      creature_table[cid] = true
      local multiplier = (getPlayerStorageValue(attacker, lvlcrit) / 100) + 1
      local new_value = math.ceil(value * multiplier)
      local new_value2 = math.ceil(2 * value * multiplier)
      --doPlayerSendTextMessage(attacker, MESSAGE_STATUS_CONSOLE_ORANGE, "Critical Hit: "..math.floor((new_value/1)))
      if isPlayer(cid) then
        doTargetCombatHealth(attacker, cid, combat, -new_value2, -new_value2, 255)     
      end
      if isMonster(cid) then
        doTargetCombatHealth(attacker, cid, combat, -new_value, -new_value, 255) 
      end         
      doSendAnimatedText(getCreaturePos(attacker), "CRITICAL!", 138)
    return false
    end 
  end 
  return true
end