[Support] Need help with buffing script

[kyono]

Ok so heres the concept:

Spell functions the same way "heal friend" would except its buff based so picture a buff that applies to a single player. The buff's strength varies from level to level and it has a cap. The mana usage varies also. The buff itself is a maximum HP buff ( It increases your maximum health ). Heres what I have so far.

local Level = getPlayerLevel(cid)
if Level >= 15 then
              Level =  15
end
local ManaCost = (100 * .3) * (Level - 11) + 100

local combat = createCombatObject()
setCombatParam(combat, COMBAT_PARAM_EFFECT, CONST_ME_MAGIC_RED)
setCombatParam(combat, COMBAT_PARAM_AGGRESSIVE, FALSE)

local condition = createConditionObject(CONDITION_ATTRIBUTES)
setConditionParam(condition, CONDITION_PARAM_SUBID, 1)
setConditionParam(condition, CONDITION_PARAM_BUFF, TRUE)
setConditionParam(condition, CONDITION_PARAM_TICKS, 5 * 60 * 1000)

function onCastSpell(cid, var)
	if (Level == 11) then
		setConditionParam(condition, CONDITION_PARAM_STAT_MAXHEALTH, 30)
		setConditionParam(condition, CONDITION_PARAM_HEALTHGAIN, 30)
	end
	if (Level == 12) then
		setConditionParam(condition, CONDITION_PARAM_STAT_MAXHEALTH, 60)
		setConditionParam(condition, CONDITION_PARAM_HEALTHGAIN, 60)
	end
	if (Level == 13) then
		setConditionParam(condition, CONDITION_PARAM_STAT_MAXHEALTH, 90)
		setConditionParam(condition, CONDITION_PARAM_HEALTHGAIN, 90)
	end
	if (Level == 14) then
		setConditionParam(condition, CONDITION_PARAM_STAT_MAXHEALTH, 120)
		setConditionParam(condition, CONDITION_PARAM_HEALTHGAIN, 120)
	end
	if (Level >= 15) then
		setConditionParam(condition, CONDITION_PARAM_STAT_MAXHEALTH, 150)
		setConditionParam(condition, CONDITION_PARAM_HEALTHGAIN, 150)
	end

	if ( getCreatureMana(cid) < ManaCost ) then
		doPlayerSendDefaultCancel(cid, RETURNVALUE_NOTENOUGHMANA)
		doSendMagicEffect(getCreaturePosition(cid), CONST_ME_POFF)
		return LUA_ERROR
	end
	
	doCreatureAddMana(cid, -ManaCost, FALSE)
	doPlayerAddSpentMana(cid, ManaCost)
	doAddCondition(cid, condition)
	return doCombat(cid, combat, var)
end

I'm unsure as to why this code doesn't work o_o. Any help would be greatly appreciated.


Quick notes -
Tibia 8.42
The Forgotten Server 0.3b3

And here is how my spells.xml looks for it

<instant name="Minor Health Increase" words="acuta health" lvl="11" mana="0" prem="0" needtarget="1" params="1" exhaustion="2000" needlearn="0" script="Instant_Priest/minor_health_buff.lua">

 

[kyono]

~Bumping for attention, feel free to add insult to your replies ~