local Players = game:GetService("Players")
local Camera = workspace.CurrentCamera
function GetMousePoint(X, Y)
    local RayMag1 = Camera:ScreenPointToRay(X, Y) --Hence the var name, the magnitude of this is 1.
    local NewRay = Ray.new(RayMag1.Origin, RayMag1.Direction * 1000)
    local Target, Position = workspace:FindPartOnRay(NewRay, Players.LocalPlayer.Character)
    return Position
end

--Listen to UserInputService's "InputChanged" event, and get the 
--Position property of the InputObject, which will be a Vector3. Pass X and Y into the
--function. It will return a position in the 3D world.