Solved Utura Gran like spell

[Northnorial]

I'm currently using this Utura Gran like spell. Basically a spell that heals over time.

healRegen = {}

local combat = createCombatObject()
setCombatParam(combat, COMBAT_PARAM_EFFECT, CONST_ME_MAGIC_BLUE)
setCombatParam(combat, COMBAT_PARAM_AGGRESSIVE, false)

local condition = createConditionObject(CONDITION_REGENERATION)
setConditionParam(condition, CONDITION_PARAM_SUBID, 1)
setConditionParam(condition, CONDITION_PARAM_BUFF_SPELL, true)
setCombatCondition(combat, condition)

function regen(cid,var,n)
n = n or 0
    if isPlayer(cid) then
        doCreatureAddHealth(cid, 500)
        if (n < 20) then
            healRegen[cid] = addEvent(regen, 3000, cid, var, n+1)
        end
    end
return true
end

function onCastSpell(cid, var)
    if healRegen[cid] then
        stopEvent(healRegen[cid])
    end
    doCombat(cid, combat, var)
    healRegen[cid] = addEvent(regen, 250, cid, var, 0)
return true
end

The problem I have is the following, when a player logs out after using the spell I get this error message:

[01/11/2014  16:47:54] Lua Script Error: [Spell Interface]
[01/11/2014  16:47:54] in a timer event called from:
[01/11/2014  16:47:54] data/spells/scripts/healing/utura gran.lua:onCastSpell

[01/11/2014  16:47:54] luaDoCreatureAddHealth(). Creature not found

I know what it is supposed to mean, but I don't know how to fix it. Haalp plis.

 

[Limos]

Are you still using the same server?

if isPlayer(cid) == TRUE then

On your server, without == TRUE is just looks if it's not nil or true and this function returns a number 1 (= TRUE) or 0 (= FALSE) and both numbers are not nil.

Also change return true to return TRUE.

 

[Northnorial]

Yes, it is still the same server and after adding == TRUE and changed true to TRUE it is working as intended.
Thank you again.