How to add decapitation effect to the axe?

[Xtrakicking]

I've been trying to figure it out in the xml files, but I didn't find the way to do it. Basically I just want to make it so the iron axe has the ability to decapitate zombies heads and limbs like the machete does. Would it be possible?

 

[Bladestorm Games]

I just quickly wrote this, so it isnt tested, but it should work:

Edit: Just tested it with a Bone Knife and it works for me (for testing on a bone knife I changed "meleeToolAxeT1IronFireaxe" to "meleeWpnBladeT0BoneKnife")

your_mod/config/items.xml

<config>
<!-- Add Decapitation chance for Iron Axe / Fireaxe -->
  <append xpath="/items/item[@name='meleeToolAxeT1IronFireaxe']">
    <effect_group>
      <passive_effect name="DismemberChance" operation="base_add" value="90"/>
    </effect_group>
  </append>
</config>