Non aggressive weapon

[Maten]

Hey!
I made a weapon that shoots cake, but i dont want players to get ws when thay use it (non aggressive).
why dont this work?

cake.lua

local combat = createCombatObject()
setCombatParam(combat, COMBAT_PARAM_AGGRESSIVE, false)
setCombatParam(combat, COMBAT_PARAM_TYPE, COMBAT_HEALING)
setCombatParam(combat, COMBAT_PARAM_EFFECT, CONST_ME_CAKE)
setCombatParam(combat, COMBAT_PARAM_DISTANCEEFFECT, CONST_ANI_CAKE)
setCombatFormula(combat, COMBAT_FORMULA_DAMAGE, 0, 1, 0, 3)

function onUseWeapon(cid, var)
	return doCombat(cid, combat, var)
end

weapons.xml

<distance id="7966" event="script" value="cake.lua"/>

items.xml

<item id="7966" article="a" name="throwing cake">
	<attribute key="weight" value="200" />
        <attribute key="weaponType" value="distance" />
        <attribute key="shootType" value="cake" />
        <attribute key="range" value="7" />
        <attribute key="maxHitChance" value="100" />
</item>