Name only gui help?

So I have this script, and if your name is one of the names inserted, you can view a gui, if not then you cant view it. Can anyone help me?

local People = {"NotSoNorm","VisualGraphics"}
local P = game.Players.LocalPlayer

function Check(name)
    for i = 1, #People do
        if (string.upper(name) == string.upper(People[i])) then --Works with lower, hm haven't tested.
            return true
            else
            return false
        end
    end
end

while wait() do
    if (Check(P.Name)) then
    script.Parent.SergantCommand.Visible=true
    else
    script.Parent.SergantCommand.Visible=false
    end
end