Im making a billboard gui name tag but when you play it doesnt load. Help?

local RpBox = game:GetService("StarterGui"):WaitForChild("RPname"):WaitForChild("FrameRP"):WaitForChild("Textbox")
local RpName = RpBox.Text
local billboardgui = game:GetService("ServerStorage"):WaitForChild("BillboardGui")
game.Players.PlayerAdded:Connect(function(player)
game.Workspace:WaitForChild(player.Name)
local clonedgui = billboardgui:Clone()
clonedgui.Parent = game.Workspace[player.Name].Head
clonedgui.TextLabel.Text = RpName
end)

so you type the your name in a seprate gui then you should get a billboard gui with your name you just typed but why doesnt it work