why my localscript on playergui that suppose to change a bool value on workspace didnt work?

i make a team selection gui in StarterGui. i also added a local script to make the selection screen gone and added a humanoid in player character. it did work fine until i tested it on server with 2 players. the gui did disappeared and both worked fine for 2 players but the bool value that i place on the workspace didnt change its value.

--startgame
script.Parent.choose.Defend.Activated:connect(function()
	local defend = Instance.new("Humanoid")
	defend.Name = "Defend"
	defend.Parent = game.Players.LocalPlayer.Character
	script.Parent.choose.Enabled = false
	game.Workspace.defend.Value = true
end)
script.Parent.choose.Prosecutor.Activated:connect(function()
	local prosecutor = Instance.new("Humanoid")
	prosecutor.Name = "Prosecutor"
	prosecutor.Parent = game.Players.LocalPlayer.Character
	script.Parent.choose.Enabled = false
	game.Workspace.prosecutor.Value = true
end)
--ready