Żle dodaje itemy

Witam mam skrypt

command /lp:
	trigger:
		loop {piece::*}:
			if {furnace::%loop-value-1%::itemy::*} is set:
				send "set"
				loop {furnace::%loop-value-1%::itemy::*}:
					send "%{furnace::%loop-value-1%::itemy::*}%"
					loop {piec::paliw::*}:
						if {furnace::%loop-value-1%::itemy::*} contains coal:
							send "2"
							loop {piec::przep::*}:
								if {furnace::%loop-value-1%::itemy::*} contains iron ore or gold ore or diamond ore:
									send "3"
									remove loop-value-4 from {furnace::%loop-value-1%::itemy::*}
#									chance of 50%:
#									remove 1 coal from {furnace::%loop-value-1%::itemy::*}
#									chance of 70%:
									give 1 melon seeds to {furnace::%loop-value-1%::itemy::*}
									add loop-value-3 of {piec::prods::%loop-index-4%} to {furnace::%loop-value-1%::itemy::*}
									stop
								else:
									send "niema rudy"
						else:
							send "niema drewna"

i zabiasto dodawania do istniejącego zapisanego itemó to robi now

dla jasności mam 60 melon seeds and 60 iron ingot

i chce aby dodawało 61 melon seeds and 61 iron ingot

a robi mi coś takiego 60 melon seeds and 60 iron ingot and melon seeds and iron ingot