Why isn't my pixel script not working? not changing Color or Material on display screen

this script makes 2 grid 1 to display the Color / material the other to detect parts in front of it so it knows what Color / Material it should display No errors it changes Color / Material but that's perminite i want it to dispaear when you stop touching a detectorPart it Crashes studio Code:

local Size = Vector2.new(script.Parent.Backround.Size.X,script.Parent.Backround.Size.Y)
Distance = 10
Resaoltion = Vector3.new(1,1,1)
FPS = 1
BasePosition = Vector3.new(-21.5, -0.5, 0.5)
------function------------
    GetPart = function(Part1,Part2)
        Part1.Touched:Connect(function(hit)
            Part2.Color = hit.Color
            Part2.Material = hit.Material
        end)
    end
-----Mirror------
for X=1, Size.X do
    for Y=1, Size.Y do
        MX = X
        MY = Y
        local Part = Instance.new("Part")
        Part.Material = "SmoothPlastic"
        Part.Anchored = true
        Part.Color = Color3.fromRGB(255,255,255)
        Part.Name = "Part [" .. X .. "," ..Y .. "]"
        Part.Size = Resaoltion
        Part.Position = BasePosition + Vector3.new(Resaoltion.X*X, Resaoltion.Y*Y,1)
        Part.Parent = script.Parent
    end
end
-----------Script that makes it work-------------------
for X=1, Size.X do
    for Y=1, Size.Y do
        DX = X
        DY = Y
        local Part2 = Instance.new("Part")
        Part2.Material = "SmoothPlastic"
        Part2.Anchored = true
        Part2.Color = Color3.fromRGB(255,255,255)
        Part2.Name = "DtectorPart [" .. X .. "," ..Y .. "]"
        Part2.CanCollide = false
        Part2.Transparency = 1
        Part2.Size = Vector3.new(Resaoltion.X,Resaoltion.Y,Distance)
        Part2.Position = BasePosition + Vector3.new(Resaoltion.X*X, Resaoltion.Y*Y,Distance/2+(1-.5))
        Part2.Parent = script.Parent
    end
end

while true do
    for X=1,Size.X do
        for Y=1, Size.Y do
            script.Parent["DtectorPart [" .. X .. "," .. Y .. "]"].Touched:Connect(function(hit)
                    script.Parent["Part [" .. X .. "," .. Y .. "]"].Color = hit.Color
                    script.Parent["Part [" .. X .. "," .. Y .. "]"] = hit.Material


            end)
        end
    end

wait(1/FPS)
end