How to make your screen fade when you touch a teleport brick?

So first of all you need to create a GUI in the starter pack. Name that GUI "ScreenEffect" and inside it incert a frame. Name that frame "Black" and size it about... {0,1000,0,1000} and make it's colour "Really black".

Great! Now we have our effect created. Now we just want to make it work.

Lets make an on touch effect

script.Parent.Touched:connect(function(hit) --Parent and Touched are capitalized.
    if hit.Parent:findFirstChild('Humanoid')then
        hit.Parent.Torso.CFrame = CFrame.new(-502, -16.5, 153) --Since it's torso player must be using R6.
    end 
end)

Now we'll create a function that will make that effect fade!

script.Parent.Touched:connect(function(hit) --Parent and Touched are capitalized.
game.Players:WaitForChild(playername).PlayerGui.ScreenEffect.Black.Visible = true
for i = 1 ,10 do
 local playername = hit.Parent.Name
game.Players:WaitForChild(playername).PlayerGui.ScreenEffect.Black.BackgroundTransparency = game.Players:WaitForChild(playername).PlayerGui.ScreenEffect.Black.BackgroundTransparency + 0.100 --Fade slowly --BackgroundTransparency must be on 0 to work.
wait(.5)
end

    if hit.Parent:findFirstChild('Humanoid')then
        hit.Parent.Torso.CFrame = CFrame.new(-502, -16.5, 153) --Since it's torso player must be using R6.
    end 
end)

wait(5)

for i = 1 ,10 do
 local playername = hit.Parent.Name
game.Players:WaitForChild(playername).PlayerGui.ScreenEffect.Black.BackgroundTransparency = game.Players:WaitForChild(playername).PlayerGui.ScreenEffect.Black.BackgroundTransparency - 0.100 --Fade slowly --BackgroundTransparency should be on 1.
wait(.5)
end
wait(3)
game.Players:WaitForChild(playername).PlayerGui.ScreenEffect.Black.Visible = false

Note: The "Black" frame transparency must be on 0 when editing. Don't worry, must be invisible to fade, obviously.

I didn't test this on studio so if there's any error comment and I'll try to fix it.