Lua [TFS 0.4/1.2] Tier upgrading system

[_M4G0_]

Hello,
this script was created by infernum, is it possible to add a quantity of items for the upgrade?
example > need 3 elven mail(2505) to upgrado for dsm(2492)

local gear = {
    [2087] = {tier = 1, upgraderType = 'key', chance = 30,
        items = {
            [2505] = 2492,
            [2160] = 2148
        }
    },
    [2088] = {tier = 2, upgraderType = 'key', chance = 80,
        items = {
            [2148] = 2160
        }
    }
}

Action - [TFS 0.4/1.2] Tier upgrading system (https://otland.net/threads/tfs-0-4-1-2-tier-upgrading-system.245047/)