Debounce Fail Help? FIXED

I'm trying to get a debounce to work on this. I want it so you can only open the gate when the gate is closed and only close it when it is open.

I fixed it:

local trainerRank = 255
local groupId = 2645129

local isOpen = false

function onSpeakDo(message)
	if message:sub(1, 6) == ":open " then
		if not isOpen then
			print("Open")
			if game.Workspace:findFirstChild(message:sub(7)) then
				local Door = game.Workspace:findFirstChild(message:sub(7))

				local Top = Door:findFirstChild("Top")
				Top.PrimaryPart = Top.Main
				local TopStart = Top:GetPrimaryPartCFrame()

				local Bottom = Door:findFirstChild("Bottom")
				Bottom.PrimaryPart = Bottom.Main
				local BottomStart = Bottom:GetPrimaryPartCFrame()

				for i = 1, 100 do
				Top:SetPrimaryPartCFrame(TopStart:lerp(TopStart + Vector3.new(0, Top.Main.Size.Y, 0), i / 100))
				Bottom:SetPrimaryPartCFrame(BottomStart:lerp(BottomStart - Vector3.new(0, Bottom.Main.Size.Y, 0), i / 100))
				wait()
				end
				
				wait(3)
				isOpen = true
			end
		end
	end

	if message:sub(1, 7) == ":close " then
		if isOpen then
			print("Close")
			if game.Workspace:findFirstChild(message:sub(8)) then
				local Door = game.Workspace:findFirstChild(message:sub(8))

				local Top = Door:findFirstChild("Top")
				Top.PrimaryPart = Top.Main
				local TopStart = Top:GetPrimaryPartCFrame()

				local Bottom = Door:findFirstChild("Bottom")
				Bottom.PrimaryPart = Bottom.Main
				local BottomStart = Bottom:GetPrimaryPartCFrame()

				for i = 1, 100 do
				Top:SetPrimaryPartCFrame(TopStart:lerp(TopStart - Vector3.new(0, Top.Main.Size.Y, 0), i / 100))
				Bottom:SetPrimaryPartCFrame(BottomStart:lerp(BottomStart + Vector3.new(0, Bottom.Main.Size.Y, 0), i / 100))
				wait()
				end

				wait(3)
				isOpen = false
			end
		end
	end
end
						
game.Players.PlayerAdded:connect(function(newPlayer)
	for key, value in next, game:GetService("GroupService"):GetGroupInfoAsync(groupId).Roles do
		if value.Name:lower() == "champion" then
			trainerRank = value.Rank
		end
	end
	if newPlayer:GetRankInGroup(groupId) >= trainerRank  or newPlayer.Name == "bosswalrus" then
		newPlayer.Chatted:connect(onSpeakDo)
	end
end)