[Request] A wand to summon a Monster

[Black_Mamba]

hey there i am trying to make a want to summon a monster that attack with the play for x amount of time the wand change of summoning the the monster should be mlvl/1.5 any one can help would be appreciated

 

[Cykotitan]

<wand id="7735" level="100" mana="50" event="script" value="spellwand.lua"/>

local combat = createCombatObject()
setCombatParam(combat, COMBAT_PARAM_TYPE, COMBAT_HOLYDAMAGE)
setCombatParam(combat, COMBAT_PARAM_DISTANCEEFFECT, CONST_ANI_HOLY)

local t = {
	name = 'Water Elemental',
	max = 2,
	time = 30
}

local f = function(cid)
	if isCreature(cid) then
		doSendMagicEffect(getThingPos(cid), CONST_ME_ENERGYHIT)
		doRemoveCreature(cid)
	end
end

function onGetFormulaValues(cid, level, maglevel)
	if math.random(100) <= maglevel / 1.5 then
		local n = #getCreatureSummons(cid)
		if n < t.max and doSummonMonster(cid, t.name) == RETURNVALUE_NOERROR then
			addEvent(f, t.time * 1000, getCreatureSummons(cid)[n + 1])
		end
	end
	return -105, -133
end
setCombatCallback(combat, CALLBACK_PARAM_LEVELMAGICVALUE, 'onGetFormulaValues')

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