[8.6][NPC] Barman - NPC that sells vials of milk/beer/wine/water

[Erevius]

As I wrote in title, I need a NPC that sells vials/bottles of beer/wine/water.
I tryed to use

shopModule:addBuyableItem({'vial of beer'}, 2006, 5, 3,'vial of beer')

function, but I doesn't work.
ATTENTION! I need the NPC uses "trade" command, not "buy vial of beer" etc.

 

[Ernstjan]

<?xml version="1.0" encoding="UTF-8"?>
<npc name="Tyoric" script="data/npc/scripts/default.lua" walkinterval="2000" floorchange="0">
	<health now="100" max="100"/>
	<look type="134" head="57" body="59" legs="40" feet="76" addons="0"/>
	<parameters>
		<parameter key="module_shop" value="1"/>
		<parameter key="shop_sellable" value="crossbow,2455,150;bow,2456,130"/>
		<parameter key="shop_buyable" value="crossbow,2455,360;bow,2456,200;spear,2389,20;poison arrow,2545,18;bolt,2543,3;arrow,2544,2"/>
	</parameters>
</npc>

try a script like this Im to bored to find all id's etc!
So just edit crossbow to bottle of beer,ID,Price
trade does work like this that you know..

 

[Erevius]

but I cannot put the value/count of fluid in this list...

 

[Cykotitan]

it's rather a npcsystem issue