{_loc} in function help

[FnnF]

This is error from this function.

function loadIsland(p: player, i: text):
    if {creatingisland} is not true:
        close {_p}'s inventory
        set {creatingisland} to true
        execute console command "effect give %{_p}% minecraft:blindness 1000 10"
        teleport {_p} to spawn of world "newislands"
        if {_p}'s world = "newislands":
            set {island::%{_p}%} to true
            set {move::%{_p}%} to false
            add 300 to {islands}
            play sound "entity.enderman.teleport" to {_p}
            send "{@p} Generating..." to {_p}
            wait 1 second
            set {move::%{_p}%} to true
            wait 1 tick
            set {_loc} to location at ({islands}, (y-coordinate of {_p}), {islands}) in world "newislands"
            set block below {_loc} to bedrock
            set world of {_loc} to {_p}'s world
            teleport {_p} to {_loc}
            paste structure {_i} at {_loc}
            set block under {_p} to air
            wait 1 tick
            if {_i} is "Plains":
                teleport {_p} to {_p} ~ (vector 12, 20, 9)
            else if {_i} is "Desert":
                teleport {_p} to {_p} ~ (vector 10, 21, 5)
            else if {_i} is "Snow":
                teleport {_p} to {_p} ~ (vector 9, 20, 11)
            else if {_i} is "Mesa":
                teleport {_p} to {_p} ~ (vector 10, 21, 12)
            else if {_i} is "Mushroom":
                teleport {_p} to {_p} ~ (vector 17, 25, 15)
            set {move::%{_p}%} to false
            set block under block under {_p} to bedrock
            send "{@p} Generating..." to {_p}
            wait 1 second
            set {_boundloc1} to {_p} ~ (vector 150, 86, 150)
            set {_boundloc2} to {_p} ~ (vector -150, -62, -150)
            create a new bound with id "%{_p}%" between {_boundloc1} and {_boundloc2}
            dkit({_p})
            execute console command "effect clear %{_p}%"
            play sound "entity.firework_rocket.twinkle" with volume 10 and pitch 1 at {_p}'s location for {_p}
            send "{@p} Welcome to your island!" to {_p}
            set {move::%{_p}%} to true
            set {island::%{_p}%} to true
            set {islandloc::%{_p}%} to {_p}'s location
            set {xc::%{_p}%} to x coordinate of {_p}
            set {yc::%{_p}%} to y coordinate of {_p}
            set {zc::%{_p}%} to z coordinate of {_p}   
            set {creatingisland} to false
        else:
            teleport {_p} to spawn of world "newislands"
            loadIsland({_p}, {_i})

I dont understand why the error is there

 

[Minecoll_YT]

Try the following, because idk how you set the variable {islands}

set {_x} to x-coordinate of {islands}
set {_y} to y-coordinate of {_p}
set {_z} to x-coordinate of {islands}
set {_world} to world of {_p}
set {_loc} to location({_x}, {_y], {_z}, {_world})