Moving Platform Script

local axis = "x"
local distance = 50
local speed = 1

local factor = 0
local initialPosition = script.Parent.CFrame.Position
local moveDirection = Vector3.new(
    axis == "x" and distance or 0,
    axis == "y" and distance or 0,
    axis == "z" and distance or 0
)
local destinationPosition = initialPosition + moveDirection
local RunService = game:GetService("RunService")
function movePlatform (time, step)
    factor = 0.5 * math.sin(time * speed) + 0.5
    local finalPosition = initialPosition:Lerp(destinationPosition, factor)
    script.Parent.CFrame = CFrame.new(finalPosition)
end
RunService.Stepped:Connect(movePlatform)