Changing the Value works in Roblox Studio but not on Roblox. Why doesnt it work?

If I play it in Roblox Studio I can change to the next Hair but if I try it in real Roblox it doesn't work the same thing for showing the Hairstyle on the label. There are also no errors in the console. Can someone help?

game.Players.PlayerAdded:Connect(function(plr)	
	--Varible for objects
	
	local PlrGui = plr.PlayerGui
	local CustGui = PlrGui:WaitForChild("CustomizeChar")
	local HairFrame = CustGui.Hair
	local HairButton = HairFrame.Hair
	local HairRightButton = HairFrame.HairRight
	local HairLeftButton = HairFrame.HairLeft
	local Male = HairFrame.Male
	local Female = HairFrame.Female
	local SkinColorFrame = CustGui.SkinColor
	
	--Values
	local Gender = plr.CharValues.Geschlecht
	local HairValue = plr.CharValues.HairValue
	
	--Other Varibles
	local db = false
	
	
	
	--Main
	
	
	HairRightButton.MouseButton1Click:Connect(function() --When player presses Hair next Button
		if db == false then --Checks cooldown
			db = true -- sets db to true
			if Gender.Value == "Male" then --checks if the gender of the person is Male
				-- Does the stuff
				if HairValue.Value == "Wavy" then 
					HairValue.Value = "Styled"
				elseif HairValue.Value == "Styled" then
					HairValue.Value = "Bald"
				elseif HairValue.Value == "Bald" then
					HairValue.Value = "Wavy"
						
				end
					
					
			elseif Gender.Value == "Female" then --checks if the gender of the person is Female
				-- Does the stuff
						
			end
			wait(0.5)
			db = false
		end
	end)
	
	while true do
		HairButton.Text = "Hair: "..HairValue.Value
		wait()
	end
end)