clica com o direito abrir como. bloco de notas se não tiver clique com o direito vá em propriedades e clique em alterar e altere para bloco de notas depois clica em aplicar e abra denovo normal com dois cliques ai aperta ctrl + A depois ctrl + C vem aqui no forum e aperta ctrl + V e manda

<?xml version="1.0" encoding="UTF-8"?>
<monster name="Chamander" nameDescription="an chamander" race="fire" experience="250" speed="200" manacost="0">
  <health now="250" max="250"/>
  <look type="314" corpse="9965"/>
  <targetchange interval="5000" chance="0"/>
  <strategy attack="100" defense="0"/>
  <flags>
    <flag summonable="0"/>
    <flag attackable="1"/>
    <flag hostile="1"/>
    <flag illusionable="0"/>
    <flag convinceable="0"/>
    <flag pushable="0"/>
    <flag canpushitems="1"/>
    <flag canpushcreatures="0"/>
    <flag targetdistance="1"/>
    <flag staticattack="85"/>
    <flag runonhealth="0"/>
  </flags>
  <attacks>
    <attack name="melee" interval="2000" skill="35" attack="30"/>
    <attack name="earth" interval="3000" chance="25" radius="4" min="-10" max="-22">
        <attribute key="areaEffect" value="greenspark"/>
    </attack>
    <attack name="earth" interval="3000" chance="8" length="5" spread="0" min="-49" max="-54">
        <attribute key="areaEffect" value="poison"/>
    </attack>
  </attacks>
  <defenses armor="10" defense="10"/>
  <immunities>
    <immunity death="1"/>
    <immunity earth="1"/>
  </immunities>
  <elements>
    <element firePercent="-5"/>
    <element icePercent="8"/>
    <element energyPercent="-10"/>
  </elements>
  <voices interval="5000" chance="10"/>
  <loot>
    <item id="2160" countmax="1" chance1="28000" chancemax="0"/> -- Crystal Coin
  </loot>
</monster>
 

 <health now="250" max="250"/>  bastá almentar isso exemplo:  <health now="500" max="500"/>

Aparece isso no console "string error not possible editing health of creature error no specific number"

Tente ver esse Tutorial é melhor para você >> http://www.tibiaking.com/forum/topic/40218-tutorial-editando-pok%C3%A9mons/