Can Anyone Help Me Fix This Compresse/Uncompress skript (its quite old)

[NiCoMaCz]

Can Anyone Help Me Fix This Compresse/Uncompress skript (its quite old), so basically the skript goes like this

options:
    # Just add them in order, and be carefully that you dont mess up
    # in this example:     64 coal = 2 coal blocks || 64 Iron ingot = 1 Iron block....
    # seperated by "," and the last comma has to be "and"
    # it will always upgrade with the item at the same position!
    
    
    BlocksToCompress: 9 diamond, 9 gold, 9 iron, 9 coal, 9 lapis
    # Enchanted Items: 1 of glowing %item%
    # named item: 1 of %item% named "Name"
    # lore: 1 of %item% named "name" with lore "Lore 1", "Lore 2" and "lore 3"
    UpgradedVersion: 1 Light Blue Glazed Terracotta named "&bCompressed Diamond", Yellow Glazed Terracotta named "&6Compressed Gold", 1 Light Gray Glazed Terracotta named "&7Compressed Iron", 1 Gray Glazed Terracotta named "&8Compressed Coal", 1 Blue Glazed Terracotta named "&1Compressed Lapis", 
    
command /compress:
    trigger:
        compress(player)
command /decompress:
    trigger:
        decompress(player)
    
function compress(p:player):
    set {_n::*} to {@BlocksToCompress}
    set {_m::*} to {@UpgradedVersion}
    loop {_n::*}:
        while {_p} has loop-value:
            remove loop-value from {_p}'s inventory
            give {_p} {_m::%loop-index%}
            set {_s} to true
    send "&bYou have no blocks to compress." to {_p} if {_s} is not set
    
function decompress(p:player):
    set {_n::*} to {@BlocksToCompress}
    set {_m::*} to {@UpgradedVersion}
    loop {_m::*}:
        while {_p} has loop-value:
            if {_p} can hold {_n::%loop-index%}:
                remove loop-value from {_p}'s inventory
                give {_p} {_n::%loop-index%}
    send "&bYou have no blocks to decompress." to {_p} if {_s} is not set

its quite old, so yes and the bugs are