elm action problem

import StartApp exposing (start)
import Effects
import Task
import Html exposing (..)
import Html.Events exposing (..)

main =
  (start
    { init = init
    , update = update
    , view = view
    , inputs = []
    }).html


type Action
    = Click
    | Dummy

type alias Model =
    { clicks: Int
    }


init : (Model, Effects.Effects Action)
init = (Model 0, Effects.none)

update : Action -> Model -> (Model, Effects.Effects Action)
update action model =
  case action of
    Click ->
      (model, Effects.task (Task.succeed Dummy))
    Dummy ->
      -- this never happens!!
      ({ model | clicks = model.clicks + 1}, Effects.none)


view : Signal.Address Action -> Model -> Html
view address model =
  let start = button [ onClick address Click ] [ text (toString model.clicks) ]
  in
      div [] ([start])