Checking the number in line of item's lore

[EndyHell]

Hello. I'm trying to create skript that checks if line of the item's lore with given text exists and then uses the number from this line to increase max player's health, but for some reason i can't get this number. Can someone help me? Here's the code:

on armor equip:
    wait a tick
    if {health.%player%} is not set:
        set {health.%player%} to player's max health
    set {_item} to player's helmet
    set {_l} to "%lore of {_item}%"
    set {_lore::*} to {_l} split at ","
    set {_counter} to 1
    loop {_lore::*}:
        set {_2} to loop-value
        if {_2} contains "&7Health&f&l:":
            set {_gethealth::*} to uncolored loop-value parsed as "&7Health&f&l: &a%num%&f&l"
        send "%{_lore::%{_counter}%}%" to player
        send "%{_gethealth::1}%" to player
        add 1 to {_counter}
    add {_gethealth::1} to {health.%player%}
    send "Health is increased on %{_gethealth::1}%." to player

Variable {_gethealth::1} returns <none> every time, don't know how to fix this.