Union Part's Size Not Changing. Can Someone Help Me Fix This?

I am making a zone that kills players for my battle royal game. The zone shrinks overtime and eventually resets. There's a lot of other stuff in the scripts that makes this happen so you can just ignore that. Here is the main script:

function movezone ()
	script.MoveZone.Disabled = false  --MoveZone is the script that makes the zone shrink.
--The script is located inside the main script and it does make the zone shrink and stops moving the zone when the resetzone function occurs. I put the script at the very end.
end

function resetzone () --This function is where I believe the error is. 
--Everything but the zone resetting appears to be working.

	script.MoveZone.Disabled = true
	game.Workspace.Zone.Size = Vector3.new(2048, 1055.914, 2048)
end




function spawnplayers ()
	game.Workspace.Spawns.JoinGame.Parent = game.ServerStorage
	game.ServerStorage.GameSpawn.Parent = game.Workspace.Spawns
	wait(1)
	
	for i, player in ipairs(game.Players:GetPlayers()) do
		player.RespawnLocation = game.Workspace.Spawns.GameSpawn
		if player.Character then
			local hum = player.Character:FindFirstChild('Humanoid')
			if hum then
				hum.Health = 0
			end	
		end
	end
	
	local information = Instance.new("Message")
	information.Text = "Run For Your Life, The Hounds Have Benn RELEASED!!!"
	information.Parent = game.Workspace
	wait(5)
	information:Destroy()
	
	movezone()
	
	wait(5)
	
	game.Workspace.Spawns.GameSpawn.Parent = game.ServerStorage
	game.ServerStorage.JoinGame.Parent = game.Workspace.Spawns

end


function resetplayers ()
	for i, player in ipairs(game.Players:GetPlayers()) do
		if player.Character then
			local hum = player.Character:FindFirstChild('Humanoid')
			if hum then
				hum.Health = 0
			end	
		end
	end
	
	resetzone()
	
end
	
--eventually the below functions will become automated inside the game but I need a way to test them before I add a ton of fancy stuff. The functions do happen when the player touches the part so this is not the problem.

game.Workspace.Test.Touched:Connect(spawnplayers)
game.Workspace.TestUnspawn.Touched:Connect(resetplayers)

Here is the script that makes the zone shrink. It is called MoveZone and starts out disabled. It is located inside the main script:

while wait() do
	wait(0.001)
	game.Workspace.Zone.Size = game.Workspace.Zone.Size - Vector3.new(1,0,1) 
	end

Again, the problem is that the zone does not reset. If this matters at all the zone is a union part that is located in workspace. Can someone please help me fix this?