Problems with the skript

[Put]

I'm not sure why this doesn't work

Code:

command /upgrade:
    cooldown: 1 second
    cooldown message: &cSlow Down!
    trigger:
        if player is holding stone pickaxe:
            open chest with 3 rows named "Pickaxe Upgrade" to player
            wait 1 tick
            format gui slot 10 of player with prismarine shard named "&e&lENCHANT: &fEfficiency" with lore "&e- &f&oAbility To Break Blocks Faster" and "&r" and "&e- &fCost &e$200" and "&e- &fMax: &e5" to run:
                set {_i} to level of efficiency of {_p}'s tool
                set {_i} to 0 if {_i} is not set
                if {_i} < 10:
                    if {_p}'s balance >= 200:
                        remove 200 from {_p}'s balance
                        enchant {_p}'s held item with "efficiency %level of efficiency of tool + 1%" parsed as enchantment type
                        set line 3 of lore of player's tool to "&e&l| &fEfficiency: &f%level of efficiency of tool%"
                        send "&a&l[!] &aUpgraded Efficiency Level" to {_p}
                    else:
                        send "&c&l[!] &cInsufficent Funds" to {_p}
                else:
                    send "&c&l[!] &cMax Level Reached" to {_p}
        else:
            send "&fHold The default pickaxe"

 

[Minecoll_YT]

1. What isn't working
2. Please put code in code blocks