Spell - Buffs

[adamox223]

Hello i made this script, and i dont know how to add:

When spell is active (Buff ON) then this spell remove -5% health per seconds, can you help me?

local combat = createCombatObject()
    setCombatParam(combat, COMBAT_PARAM_EFFECT, 8)
    setCombatParam(combat, COMBAT_PARAM_AGGRESSIVE, false)

local condition = createConditionObject(CONDITION_ATTRIBUTES)
    setConditionParam(condition, CONDITION_PARAM_TICKS, -1)
    setConditionParam(condition, CONDITION_SPEED, 25)
    setCombatCondition(combat, condition)

local function healthCheck(cid)
    player.add(cid)
    if isPlayer(player:get()) and getCreatureCondition(player:get(), CONDITION_ATTRIBUTES) then
        if player:health() > player:healthMax()/200 then
            player:health(-player:healthMax()/200, true, false)
            addEvent(healthCheck, 1000, player:get())
            return true
        else
            doRemoveCondition(player:get(), CONDITION_ATTRIBUTES)
        end
    end
return false
end

function onCastSpell(cid, var)
    if not getCreatureCondition(cid, CONDITION_ATTRIBUTES) then
    doPlayerSendTextMessage(cid, MESSAGE_STATUS_CONSOLE_BLUE, "Buff On")
        doCombat(cid, combat, var)
        healthCheck(cid)
    else
        doRemoveCondition(cid, CONDITION_ATTRIBUTES)
        doPlayerSendTextMessage(cid, MESSAGE_STATUS_CONSOLE_BLUE, "Buff Off")
        stopEvent(healthCheck)
        return false
    end
return true
end