Lua mute and exhaust

[andu]

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

local condition = createConditionObject(CONDITION_MUTED)
setConditionParam(condition, CONDITION_PARAM_TICKS, 11000)
setCombatCondition(combat, condition)

function onCastSpell(cid, var)
if isPlayer(getCreatureTarget(cid)) == true then
	doCombat(cid, combat, var)
end
return true
end

This is a simple script of my spell, i want a spell what will make player unable to cast spells for few seconds
i tried with condition muted and condition exhaust but noone works, dunno why

 

[Blood BlvD Ot]

explain more about what exactly you want this to do.(pseudo code)
Given if there are error messages, you should provide them.