Help with missing counter

[Zaphery]

I have a question, on my ot I use the command exhaustion = "20000"
on the spells.xml, and it is 20 seconds exhaustion for use it again... so when i use the spell this is going to 19... 18... to 0 (it means it's ready for make the spell other time) so where can i find this counter for put on doPlayerSendTextMessage like a message that says "This spell canno't be used after 19 seconds" for exemple ?

 

[Cykotitan]

Use a storage value with os.time() for storing exhaust and differentiate time.

 

[Zaphery]

Use a storage value with os.time() for storing exhaust and differentiate time.

I'm using this scripts on spells i'm using tfs 210

local config =
{
seconds = 5,
storage = 987,
msg = "Please wait!"
}

function onCastSpell(cid, var)
if getPlayerStorageValue(cid, config.storage) == 1 then
doPlayerSendCancel(cid, config.msg)
return TRUE
end
setPlayerStorageValue(cid, config.storage, 1)
addEvent(useAgain, config.seconds*1000, cid)
return doCombat(cid, combat, var)
end

I want to change the msg like This spell canno't be used after 5 seconds" for exemple but i don't know how to do