Przepalanie 2 rud na raz

Witam mam skrypt ///nie mój

on load:
    set {piec::przep::*} to magma cream and bowl, redstone
    set {piec::prods::*} to iron ingot and gold ingot, diamond
    set {piec::paliw::melon seeds} to 1
    set {piec::paliw::stick} to 1
    set {piec::time} to 2 second
    set {piec::rows} to 1
    set {piec::name} to "&6e-piec"
on rightclick:
    if event-block is furnace:
        set {_piec} to chest with {piec::rows} rows named {piec::name}
        wait 1 tick
        open {_piec} to player
        while inventory name of current inventory of player is {piec::name}:
            loop {piec::przep::*}:
                loop {piec::paliw::*}:
                    while {_piec} has (loop-value-2 of loop-value-1):
                        if {_piec} has (loop-index-2 parsed as item):
                            remove loop-value-1 from {_piec}
                            chance of 50%:
                                remove (loop-index-2 parsed as item) from {_piec}
                            add 1 coal to {_piec}
                            add loop-value-2 of {piec::prods::%loop-index-1%} to {_piec}
                            wait {piec::time}
                        else:
                            exit loop
            wait 1 second
on inventory close:
    if inventory name of current inventory of player is {piec::name}:
        add all items in player's current inventory to player

i przepala mi 1 rudę na raz ale chce aby przepalanie miało pierwszeństwo od slotu 0 i aby 2 na raz się przepalały