on inventory click:
    name of cursor item of player contains "&bEternal Boots"
    name of event-slot contains "&bEternal Boots"
    lore of cursor slot of player contains "&7Upgrade Progress: "
    lore of event-slot contains "&7Upgrade Progress: "
    cancel event
    set {_I::*} to lore of event-slot split at "||"
    set {_L::*} to lore of cursor slot of player split at "||"
    loop {_I::*}:
        if "%loop-value%" contains "&7Upgrade Progress: ":
            set {_t} to loop-index parsed as integer
            stop loop
    loop {_L::*}:
        if "%loop-value%" contains "&7Upgrade Progress: ":
            set {_s} to loop-index
            stop loop
    set {_L} to "%uncolored {_L::%{_s}%}%"
    set {_I} to "%uncolored {_I::%{_t}%}%"
    replace every "Upgrade Progress: " with "" in {_L}
    replace every "Upgrade Progress: " with "" in {_I}
    replace every " " with "" in {_L}
    replace every " " with "" in {_I}
    set {_B::*} to {_I} split at "/"
    set {_A::*} to {_L} split at "/"
    set {_N} to {_A::1} parsed as number
    set {_M} to {_A::2} parsed as number
    set {_O} to {_B::1} parsed as number
    set {_P} to {_B::2} parsed as number
    if {_o} is 150:
        stop
    if {_n} is 150:
        stop
    if name of cursor item of player contains "&e[Lv 1]":
        add 1 to {_o}
    add {_n} to {_o}
    set cursor slot of player to air
    if {_o} is more than or equal to {_p}:
        if {_p} is 2:
            set line 2 of lore of event-slot to "&7Escape 2"
            set line 3 of lore of event-slot to "&cLocked"
            set line 4 of lore of event-slot to "&cLocked"
            set line 6 of lore of event-slot to "&7Upgrade Progress: %{_o}% / 6"
            set name of event-slot to "&bEternal Boots &e[Lv 2]"
        else if {_p} is 6:
            set line 2 of lore of event-slot to "&7Escape 3"
            set line 3 of lore of event-slot to "&cLocked"
            set line 4 of lore of event-slot to "&cLocked"
            set line 6 of lore of event-slot to "&7Upgrade Progress: %{_o}% / 15"
            set name of event-slot to "&bEternal Boots &e[Lv 3]"
        else if {_p} is 15:
            set line 2 of lore of event-slot to "&7Escape 4"
            set line 3 of lore of event-slot to "&7Absorbing 1"
            set line 4 of lore of event-slot to "&cLocked"
            set line 6 of lore of event-slot to "&7Upgrade Progress: %{_o}% / 30"
            set name of event-slot to "&bEternal Boots &e[Lv 4]"
        else if {_p} is 30:
            set line 2 of lore of event-slot to "&7Escape 4"
            set line 3 of lore of event-slot to "&7Absorbing 2"
            set line 4 of lore of event-slot to "&cLocked"
            set line 6 of lore of event-slot to "&7Upgrade Progress: %{_o}% / 75"
            set name of event-slot to "&bEternal Boots &e[Lv 5]"
        else if {_p} is 75:
            set line 2 of lore of event-slot to "&7Escape 4"
            set line 3 of lore of event-slot to "&7Absorbing 3"
            set line 4 of lore of event-slot to "&cLocked"
            set line 6 of lore of event-slot to "&7Upgrade Progress: %{_o}% / 150"
            set name of event-slot to "&bEternal Boots &e[Lv 6]"
        else if {_p} is 150:
            set line 2 of lore of event-slot to "&7Escape 4"
            set line 3 of lore of event-slot to "&7Absorbing 4"
            set line 4 of lore of event-slot to "&7Reinforced 1"
            set line 6 of lore of event-slot to "&cMax Level"
            set name of event-slot to "&bEternal Boots &e[Lv 7]"
    else:
        set the {_t}th line of lore of event-slot to "&7Upgrade Progress: %{_o}% / %{_p}%"