Dragging Blocks or Models?

How can I allow a player to drag certain models like in the style of Lumber Tycoon 2?

Some suggested this code but It doesn't give errors, and doesn't seem to work.

local model = workspace.TestModel


local RunService = game:GetService("RunService")
local UIS = game:GetService("UserInputService")
local Player = game.Players.LocalPlayer
local Mouse = Player:GetMouse()

UIS.InputBegan:connect(function(input, gpe)
if not gpe and input.UserInputType == Enum.UserInputType.MouseButton1 then
model:SetPrimaryPartCframe(CFrame.new(Mouse.hit.x, Mouse.hit.y, Mouse.hit.z))
end
end)

When you post next time, hit the lua logo, so its easier for us to read, check if it has a primary part?