Help with FilteringEnabled?

I have a script. When you touch a part(the part has a non-local script), a value inside of my GUI changes. Without filtering, it works fine. But, when filtering is enabled, it does not work. How would I enable it to work?

Inside the GUI(local script):

repeat wait() until script.Parent.Part1.Value == true 

Inside the brick which you touch(server script):

finishPart = script.Parent
db = false

finishPart.Touched:connect(function(hit)
	if not hit.Parent:FindFirstChild("Humanoid") then return end
	if db == false then
		db = true
		local pw = game.Workspace:FindFirstChild(hit.Parent.Name)
		local p = game.Players:FindFirstChild(hit.Parent.Name)
		print(pw)
		p.PlayerGui:FindFirstChild('Tutorial'):FindFirstChild('Part1').Value = true
		wait()
		db = false
	end
end)

When you touch the brick, the value does not change.