Lua Mana- and healing -rune exhaustion

[Godsaft]

So I've been noticing that the Manarune is blocking the healingrune exhaustion, I previous had it in Spells but changed to potion after searching around for better solution, here is the script for manarune:
(data/acton/actions.xml):

 <action itemid="2263" event="script" value="mana_rune.lua" allowfaruse="1"/>

(data/action/scripts):

local exhaust = createConditionObject(CONDITION_EXHAUST)
setConditionParam(exhaust, CONDITION_PARAM_TICKS, getConfigInfo('timeBetweenExActions') - 1)

function onUse(cid, item, fromPosition, itemEx, toPosition)
    local level, mlevel = getPlayerLevel(cid), getPlayerMagLevel(cid)
    local mana_minimum = level * 1 + mlevel * 1 - 50
    local mana_maximum = level * 1.2 + mlevel * 1
    doPlayerAddMana(cid, math.random(mana_minimum, mana_maximum))
    doSendMagicEffect(getThingPos(itemEx.uid), CONST_ME_MAGIC_BLUE)
    doCreatureSay(itemEx.uid, "Aaaah...", TALKTYPE_ORANGE_1)
if item.type > 1 then
    doChangeTypeItem(item.uid, item.type - 0)
end
    return TRUE
end

But this still blocks the healingrune, my goal is to be able to put healingrune like 30-50ms right after the manarune. I've also tried to change the "TimeBetweenActions to 1", but it didn't work, the only way I made it work is to change "timeBetweenExActions to 30" but then you can spam the runes like 10 times in one second.

Sincerely,
Godsaft