How to make a ray that moves with the mouse?

This might be a stupid question, but I've only just started scripting, and really need this for something I'm working on. If someone could please share with me how I could make a cylinder follow the mouse, whilst still being anchored, that would be great. I've tried to search this question up on Youtube, but nothing came up ;c. Hopefully someone can help me.

Thanks!

In a local script that is in the StarterGui paste the following code:

local cylinder = game.Workspace:FindFirstChild("Part", true) -- Change "Part" to the name of the cylinder you want to move and make sure that the cylinder has a unique name that nothing else has --
local mouse = game.Players.LocalPlayer:GetMouse()
while cylinder == nil do
	wait(0.1)
end
mouse.TargetFilter = cylinder
while true do
    wait(0.05)
	local cf = CFrame.new(mouse.Hit.X, mouse.Hit.Y, mouse.Hit.Z)
	cylinder.CFrame = cf
	game.ReplicatedStorage.moveCylinderEvent:FireServer(cf, cylinder)
end

In the ReplicatedStorage insert a remote event and name it "moveCylinderEvent" without the quotes.

In the ServerScriptService insert a script and paste the following code:

game.ReplicatedStorage.moveCylinderEvent.OnServerEvent:Connect(function(cf, cylinder)
	cylinder.CFrame = cf
end)