Options:

        P: <cyan>[<gray>UHC<cyan>]

command /nogoingback <text>:
        usage: /nogoingback <on/off>
        aliases: /ngb
        permission: skript.op
        trigger:
                if arg-1 is "on":
                        set {NoGoingBack} to true
                        broadcast "{@P} <red>No Going Back Enabled"

                if arg-1 is "off":
                        set {NoGoingBack} to false
                        broadcast "{@P} <red>No Going Back Disabled"
                if arg-1 is "set":
                        set {EndWarp} to player's location
                        message "{@P} <red>Warp Set"


on portal:
        {NoGoingBack} is true
        biome of player is hell
        wait 1 second
        teleport player to {EndWarp}


on portal enter:
        {NoGoingBack} is true
        biome is not hell or sky
        message "{@P} <red>Once you go through the portal, there is no going back!" to player


on portal:
        {NoGoingBack} is true
        biome of player is sky
        cancel the event