Scoreboard with skRayFall Issue!

Code (Text):

on join:
    if {rank::%UUID of player%} is not set:
        set {rank::%UUID of player%} to "&8[&9M&be&9m&bb&9e&br&8]"
    set join message to "&7[&a✔&7] &b%player%"
    send "&aWelcome Back To &fSky&bTrade!"
    while player is online:
        wipe player sidebar
        set name of sidebar of player to "&7► &fSky&bTrade &7◄    "
        set score "———————————" in sidebar of player to 15
        set score "• &bName:&f %player%" in sidebar of player to 14
        set score "• &bRank: %{rank::%UUID of player%}%" in sidebar of player to 13
        wait 45 ticks

 

It won't show the players Rank or even the line it's supposed to be on!

 

I will give it a try thank you so much!