So. I didint make this script i just took it from the roblox wiki but that was a part that was a local part i need so i can use a model instead of make a new part. But dont know how.
Here's the current script
local player = game.Players.LocalPlayer
-- get or wait for the character
local character = player.Character or player.CharacterAdded:wait()
-- add the message
local bin = Instance.new("Message")
bin.Name = 'LocalBin'
bin.Parent = character
-- Now that the 'local part bin' is in the character, you can simply place any parts
-- you want inside of it. I'll write one for example purposes.
local platform = Instance.new("Part")
platform.CFrame = character.Torso.CFrame * CFrame.new(15, 5, 0)
platform.Anchored = true
platform.Size = Vector3.new(10, 1.2, 10)
-- remember, parts go inside of 'bin', not workspace
platform.Parent = bin

3 comments
If you turn on filter enabled, anything do make and do via a Local Script is "local".
The sooner you learn FE, the better. If you take too long to learn it, you'll have to re-learn how to do certain things. It's better to learn how to do something the right way first than to learn the wrong way first, and have to re-do things.
@wfvj014 I know this first hand.