Source

@VegaS

7 hours ago, Galet said:

Hello,

You can base yourself upon the device that detects metin stones, I forget the name in english, but the French name is "Compas du Metin" : http://wiki.metin2.fr/index.php/Compas_du_Metin

You can see the number of use that remain on the item description, you can take this part and add it to a new item, like a box !

 

Have a nice day

http://wiki.metin2.co.uk/index.php/Compass_for_Metin_Stones
Here's the English version

9 minutes ago, jkhan said:

Thanks but this is not what I want.
if duration is 0 means not to use item i want.

Fixed it in my first post. This should work now  

Or you can use this version, which is more simple: 

quest biolog_reset_time begin
	state start begin
		when 20094.chat."Reset Time" begin
		if pc.getqf("collect_timewait") > get_time() then
			say_title("Reset Time")
			say(" ")
			say("Do you want to reset the time?")
			say(" ")
			local s = option("Yes","No")
			if s == 1 and pc.count_item(70001) >= 1 then
  				pc.setqf("collect_timewait", 0)
  				pc.remove_item(70001, 1)
  				say_title("Reset Time")
  				say(" ")	
  				say("Okay, done!")
  				say(" ")
  				return
  			elseif s == 1 and pc.count_item(70001) < 1 then
  				say_title("Reset Time")
  				say(" ")
  				say("You don't have "..item_name(70001).." !")
  				say("Come back when you have it...")
  				say(" ")
  				return
  			else
  				say_title("Reset Time")
  				say(" ")
  				say("Okay! See you later...")
  				say(" ")
  				return
  			end -- if
  		else
  			say_title("Reset Time")
  			say(" ")
  			say("You don't need to reset the time...")
  			say("You can already deliver the next item!")
  			say(" ")
  			return
  		end -- if2

		end -- when
	end -- state
end -- quest

quest biolog_reset_time begin
	state start begin
		when 20094.chat."Reset Time" begin
			say_title("Reset Time")
			say(" ")
			say("Do you want to reset the time?")
			say(" ")
			local s = option("Yes","No")
			if s == 1 and pc.count_item(70001) >= 1 and pc.getqf("collect_timewait") > get_time() then
  				pc.setqf("collect_timewait", 0)
  				pc.remove_item(70001, 1)
  				say_title("Reset Time")
  				say(" ")	
  				say("Okay, done!")
  				say(" ")
  				return
  			elseif s == 1 and pc.count_item(70001) >= 1 and pc.getqf("collect_timewait") <= get_time() then
  				say_title("Reset Time")
  				say(" ")
  				say("You don't need to reset the time...")
  				say("You can already deliver the next item!")
  				say(" ")
  				return
  			elseif s == 1 and pc.count_item(70001) < 1  then
  				say_title("Reset Time")
  				say(" ")
  				say("You don't have "..item_name(70001).." !")
  				say("Come back when you have it...")
  				say(" ")
  				return
  			else
  				say_title("Reset Time")
  				say(" ")
  				say("Okay! See you later...")
  				say(" ")
  				return
  			end -- if
		end -- when
	end -- state
end -- quest

First delete flags and then give reward. Intented or unintented disconnection during the speech will bring many exploits. Do that anytime you want to give a reward. First, remove item then add item. First remove flag, then add item.