Ummm... My "Kick or Pass" door won't work for some weird reason... Any ideas?

So, I am making a "Dev Lair", were us devs can reuse assets, control weather, etc. (I don't wanna do this via GUI). BUT, it's hidden, like so.

I am using an invisible part to either let people in or kick people. It also has a Lock feature, where I may choose to not let other devs in, either.

My code is simple and basic for any experienced dev, so here we go:

local locked = script.Parent.Locked -- A "Bool Value"

-----------------------------------------------------------------------------------
script.parent.touched:Connect(function(t)
	
	local plr = game.Players:GetPlayerFromCharacter(t.Parent)
	local rank =plr:GetRankInGroup(3326074)
	
	if rank >= 19 and locked.Value == false then
		script.Parent.CanCollide = false
		
	elseif rank >= 19 then
		plr:Kick("THIS HAS BEEN LOCKED BY SOME OTHER DEV (or hacker)! HA!")
		
	else
		plr:Kick("YOU MAY NOT ENTER THE HOLY DEVELOPER'S LAR, NOOB!!! HA HA HA HA HA HA HA HA HA HA HA!!!")
		
	end
end)

----------------------------------------------------------------------------------

script.Parent.TouchEnded:Connect(function()
	script.Parent.CanCollide = true
	
end)

"Locked" is a Bool Value, if you couldn't tell.

Now, if we move to the Output log, things get VERY confusing indeed...

17:14:00.903 - Workspace.Terrain.DevLair.KickWall.Script:10: attempt to index upvalue 'locked' (a boolean value)

17:14:00.904 - Stack Begin

17:14:00.904 - Script 'Workspace.Terrain.DevLair.KickWall.Script', Line 10

17:14:00.905 - Stack End

So, I ask: " WHAT IS AN "upvalue???! "

And, also, can somebody please help me figure out how to fix this? Thanks in advance!

Rename your BoolValue to something else. The script is thinking you are using the Locked Property of parts.

It is erroring because you are checking if a Boolean has a Value where you need to check if a BoolValue has a Value.

--error
local x = true --because Part.Locked is a bool property
print(x.Value)

--success
local x = Instance.new('BoolValue')
print(x.Value)