Quest with time help

[DragonBlack94 2]

Hello I would like to modify this mission by putting it in time, where example after 1 hour it is canceled if you do not finish it

Anyone kind enough to help me?

 

Quote

quest Metin80 begin
	state start begin
		when login or levelup with pc.get_level() >= 80 begin
			set_state("inizio_metin")
		end
	end
	state inizio_metin begin
		when 8058.kill begin  
			pc.setqf("metin_killati" , pc.getqf("metin_killati")+1)
			if pc.getqf("metin_killati") == 30 then
		        addimage(-140, -350, "ground.tga")
				say_title("Missione livello 80!")
				say("")
				say("Complimenti!")
				say("Hai distrutto 30 metin del freddo!")
				say("Come promesso ecco la ricompensa:") 
				say("")
				say_reward("Ricevi: 12.000.000 Exp.")
				say_reward("Ricevi: 14.000.000 Yang.")
				say_reward("Ricevi: Cintura con Rune.")
				say_reward("Ricevi: Baule Alchimia x10.")
				say_reward("Ricevi: Moneta LastBreath x50.")
				pc.give_exp2 ( 12000000 )
				pc.changegold ( 14000000 )
				pc.give_item2("18060", 1)
				pc.give_item2("33029", 10)
				pc.give_item2("25105", 50)
				set_state("fine_metin")
			end
		end
		when letter begin
			send_letter_ex("Metin 85", "purple,blink,ex", "scroll_open_purple.tga")
		end
		when button or info begin
			if pc.getqf("metin_killati") < 30 then
			    addimage(-140, -350, "ground.tga")
				say_title("Distruggi 30 metin del freddo!")
				say("")
				say("Ciao ".. pc.get_name() .."")
				say("Se distruggi 30 metin del freddo riceverai[ENTER]una bella ricompensa.")
				say("")
				say("Dovrai distruggere:")
				say("Metin 80")
				say("")
				say_reward("Attualmente hai distrutto: ".. pc.getqf("metin_killati") .." metin del freddo.")
			end
		end
	end
	state fine_metin begin
	end
end