 
   def enable(flag_name, [for_percentage_of: {:time, ratio}]) when is_atom(flag_name) do
     gate = Gate.new(:percentage_of_time, ratio)
+    {:ok, _flag} = @store.put(flag_name, gate)
+    {:ok, true}
+  end
+
+  def enable(flag_name, [for_percentage_of: {:actors, ratio}]) when is_atom(flag_name) do
+    gate = Gate.new(:percentage_of_actors, ratio)
     {:ok, _flag} = @store.put(flag_name, gate)
     {:ok, true}
   end

      iex> FunWithFlags.enabled?(:random_glitch)
      false

  """
  @spec enable(atom, options) :: {:ok, true}
  def enable(flag_name, options \\ [])

  to a binary and it's stored and retrieved as a binary. Atoms are
  supported for retro-compatibility with versions <= 0.9)
  * `:for_percentage_of` - used to enable the flag for a percentage
  of time or actors, expressed as `{:time, float}` or `{:actors, float}`,
  where float is in the range `0.0 < x < 1.0`.

  ## Examples

