Why isnt this script working online?

So. i am making a character chooser but when imma play it online then this script dosent work and gives me an error but Next is in the Frame so i dont know if it is the localscript that cant do so if i click on a button then it goes to the next character cus i am using a localscript but can't figure out why it isnt working so thats why i need help to solve this problem.

Script.

local Img = script.Parent.ImageLabel
local plr = game.Players.LocalPlayer
local Selectedo = script.Parent.Selected.Value

local HatNumber = 0
local Selected

function Choose()
	
end

script.Parent.Next.MouseButton1Down:connect(function()
	HatNumber = HatNumber + 1
	if HatNumber == 0 then
		script.Parent.Choosed.Text = "Selected: NONE"
	end
	if HatNumber == 1 then
		game.ReplicatedStorage.Selectable.BadmanBobby:Clone().Parent = workspace.Folder
		script.Parent.Choosed.Text = "Selected: Badman Bobby" -- TEXT
		if game.ReplicatedStorage.Selectable.BadmanBobby.Locked.Value == true then
			script.Parent.Locked.Visible = true
		elseif HatNumber <= 1 then
			script.Parent.Locked.Visible = false
		end
	elseif HatNumber == 2 then
			game.Workspace.Folder.BadmanBobby:Destroy()
	end
	if HatNumber == 2 then
		game.ReplicatedStorage.Selectable.SWATMansam:Clone().Parent = workspace.Folder
		script.Parent.Choosed.Text = "Selected: SWATMan sam" -- TEXT
		if game.ReplicatedStorage.Selectable.SWATMansam.Locked.Value == true then
			script.Parent.Locked.Visible = true
		elseif HatNumber <= 2 then
			script.Parent.Locked.Visible = false
		end
	elseif HatNumber == 3 then
		game.Workspace.Folder.SWATMansam:Destroy()
	end
	if HatNumber == 3 then
		game.ReplicatedStorage.Selectable.GuardGillbert:Clone().Parent = workspace.Folder
		script.Parent.Choosed.Text = "Selected: Guard Gillbert" -- TEXT
		if game.ReplicatedStorage.Selectable.GuardGillbert.Locked.Value == true then
			script.Parent.Locked.Visible = true
		elseif HatNumber <= 3 then
			script.Parent.Locked.Visible = false
		end
	elseif HatNumber == 4 then
		game.Workspace.Folder.GuardGillbert:Destroy()
	end
	if HatNumber == 4 then
		HatNumber = -1
	end
	print(HatNumber)
end)

"Next isnt valid member of Frame"

where you have made variables like "Selected", instead of using the variable name each time, write out "script.Parent.Selected.Value".