Paralyze rune error

[mocoba]

Hello guys when anyone attack paralyze rune i found this error :S

[22:48:57.479] [Error - Spell Interface]
[22:48:57.479] data/spells/scripts/support/paralyze rune.lua:onCastSpell
[22:48:57.479] Description:
[22:48:57.479] data/spells/scripts/support/paralyze rune.lua:12: attempt to perf
orm arithmetic on local 'paradelay' (a nil value)
[22:48:57.479] stack traceback:
[22:48:57.479]  data/spells/scripts/support/paralyze rune.lua:12: in function <d
ata/spells/scripts/support/paralyze rune.lua:9>

and paralyze rune.lua

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

local condition = createConditionObject(CONDITION_PARALYZE) 
setConditionParam(condition, CONDITION_PARAM_TICKS, 20000) 
setConditionFormula(condition, -1, 40, -1, 40) 
setCombatCondition(combat, condition) 

function onCastSpell(cid, var) 
local paradelay = getConfigInfo('paralyzeDelay') 
    if isPlayer(variantToNumber(var)) == TRUE then 
        return doCombat(cid, combat, var), exhaustion.set(variantToNumber(var), 30030, paradelay/1000), doSendMagicEffect(getCreaturePosition(cid), CONST_ME_MAGIC_GREEN) 
    else 
        return doCombat(cid, combat, var), doSendMagicEffect(getCreaturePosition(cid), CONST_ME_MAGIC_GREEN) 
    end 
end

Thanks and i rep++