Not working as intended

Help and Feedback Scripting Support
#1

I am creating a sine wave but instead of parts re positioning as an individual it is re positioning as a croup.

Code:

local RunService = game:GetService("RunService")

local A = 1
local lambda = 1
local k = 2 * math.pi / lambda
local f = 1
local w = 2 * math.pi * f
local p = math.rad(0)
local D = 0

local y = function(x, t)
	return A * math.sin(k * x + w * t + p) + D
end

local Parts = {}
local Size = Vector2.new(25, 25)

for X = 1, Size.X do
	for Y = 1, Size.Y do
		local Part = Instance.new("Part")
		Part.CFrame = CFrame.new(X * 4, y(X * 4, tick()), Y * 4)
		Part.Anchored = true
		Part.Size = Vector3.new(4, 4, 4)
		Part.Parent = workspace
		table.insert(Parts, {
			Part = Part,
			CFrame = Part.CFrame
		})
	end
end

while true do
	for _, Value in pairs(Parts) do
		Value.Part.CFrame = CFrame.new(Value.CFrame.Position.X, y(Value.CFrame.Position.X, tick()), Value.CFrame.Position.Z)
	end
	wait()
end

what I mean is happening

robloxapp-20210531-1906381.wmv (153.8 KB)

#2

Are the parts unanchored and welded to each other?

(I cannot watch the video link since I cannot download it on ipad)

#3

Is to do with the math not the properties or instances Imgur: The magic of the Internet