Whats the issue in the second code? (Basic CFrames)

There are two variations of the code i can use, but the second one makes the blue block aim in the right direction, but far off. Can someone explain whats happening? Im Just starting to learn CFrames, so i have no clue.

First scenario: https://imgur.com/a/3ZcGrwH

local Subject = script.Parent.Subject
local Target = script.Parent.Target

local i = 5
while wait() do
	i = i + 1
	print(i)

	local ATP = Vector3.new(90, i, 10)
	Subject.CFrame = CFrame.new(ATP,Target.Position)
	if i > 80 then
		i = 5
	end  

end

Second Scenario: https://imgur.com/a/aFqqpnp

local Subject = script.Parent.Subject

local Target = script.Parent.Target


local i = 5
while wait() do
	i = i + 1
	print(i)
	
	local ATP = Vector3.new(90, 5, 10)
	
	Subject.CFrame = CFrame.new(ATP,Target.Position) + Vector3.new(0, i, 0)
	
	if i > 80 then
		i = 5
	end
end

The second one should be subtracting the new vector3, not adding it.