Problem with runes

[Exotis]

Ok here it is...I use NaxedOt 4.5 for tibia 8.50 and I used to ahve a manarune and uh formula working on my Forgotten Server for 8.42.

here are the scripts

manarune:

local combat = createCombatObject()
setCombatParam(combat, COMBAT_PARAM_EFFECT, CONST_ME_MAGIC_GREEN)
setCombatParam(combat, COMBAT_PARAM_TARGETCASTERORTOPMOST, 1)
setCombatParam(combat, COMBAT_PARAM_AGGRESSIVE, 0)

function onCastSpell(cid, var)

local level = getPlayerLevel(cid)
local mlevel = getPlayerMagLevel(cid)
local pos = getPlayerPosition(cid)

-- Mana Formula Settings --
-- You can use "level" and "mlevel" --
local mana_minimum = (level * 5) * 0.25
local mana_maximum = (level * 5) * 0.75
-- Mana Formula Settings END --
local mana_add = math.random(mana_minimum, mana_maximum)
doPlayerAddMana(cid, mana_add)
doSendAnimatedText(pos, mana_add, TEXTCOLOR_LIGHTBLUE)
return doCombat(cid, combat, var)
end

uh:

local combat = createCombatObject()
setCombatParam(combat, COMBAT_PARAM_TYPE, COMBAT_HEALING)
setCombatParam(combat, COMBAT_PARAM_EFFECT, CONST_ME_MAGIC_BLUE)
setCombatParam(combat, COMBAT_PARAM_AGGRESSIVE, FALSE)
setCombatParam(combat, COMBAT_PARAM_TARGETCASTERORTOPMOST, TRUE)
setCombatParam(combat, COMBAT_PARAM_DISPEL, CONDITION_PARALYZE)

function onGetFormulaValues(cid, level, maglevel)
    min = (level * 5) * 0.75
    max = (level * 5) * 1.25
    if min < 250 then
        min = 250
    end
    return min, max
end

setCombatCallback(combat, CALLBACK_PARAM_LEVELMAGICVALUE, "onGetFormulaValues")

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

1st of all, even though I changed everything for the manarune, I can't create it using a blank rune and a spell.
2nd, the manarune is infinit when it has 1 charge left.
3rd, the manarune heals random from 1 to 1000 at level 25 + I dont need a levle requirement to sue it even though I set a level requirement....
4th...the Uh rune doesn't heal at least 250 as the script says.

I need help please I tried everything I could >.<