Why is the ranks for my group not auto updating for the overhead whenever I join?

local User = script:WaitForChild("Username")
local Player = game.Players.LocalPlayer
local Rank = script:WaitForChild("Rank")
local Regiment = script:WaitForChild("Regiment")

game.Players.PlayerAdded:connect(function(Player)
    Player.CharacterAdded:connect(function(Character)
        spawn(function()
            wait()
            local c = User:clone()
            local a = Rank:clone()
            local b = Regiment:clone()
            a.Adornee = Character:WaitForChild("Head")
            a.TextLabel.Text = Player:GetRoleInGroup(GroupID)
            a.Enabled = true
            a.Parent = Character
            b.Adornee = Character:WaitForChild("Head")
        local regimentIDs = {RegimentID} 
            for i,regimentID in pairs(regimentIDs) do
                if Player:IsInGroup(regimentID) then
                    b.TextLabel.Text = Player:GetRoleInGroup(regimentID)
    end
end
            b.TextLabel.TextColor3 = (Player.TeamColor.Color)
            b.Enabled = true
            b.Parent = Character
            c.Adornee = Character:WaitForChild("Head")
            c.TextLabel.TextColor3 = (Player.TeamColor.Color)
            c.TextLabel.Text = Player.Name
            c.Enabled = true
            c.Parent = Character
            Character:WaitForChild('Humanoid').NameOcclusion = Enum.NameOcclusion.OccludeAll
            local h = Character.Head:Clone()
            local m = Instance.new('Model',Character)
            m.Name = 'NameTag'
            h.Parent = m
            h.Transparency = 1
            h:WaitForChild('face'):Destroy()
            Character.Head.Transparency = 0
            local w = Instance.new('Weld',Character.Head)
            w.Part0, w.Part1 = Character.Head, h
            a.StudsOffset = Vector3.new(0, 1.8, 0)
            b.StudsOffset = Vector3.new(0, 1.3, 0)
            c.StudsOffset = Vector3.new(0, 2.55, 0)
        end)
    end)
end)

The ID's I have filled in just not exposing them to everyone. I was thinking it was due to the order of the functions, but have had no luck.