Modal window stimulus with event

I want to call a modal on a view with ajax: success event, use stimulus
view:

div [
  data-controller= "modal-loader"
  data-action="ajax:success->modal-loader#loadModal"
  ]
   = render Buttons::SaveButton.new
     = render Modals::Modal.new(modal_title: 'Modal')

controller:

def create
  @voc_city = VocCity.new(params[:voc_city])
  authorize @voc_city.becomes(VocCity)
  if @voc_city.save
    head :ok
  else
    respond_with @voc_city, status: :unprocessable_entity
  end
end

But the modal won’t get called, what am I doing wrong?

Be sure to specify for the form remote: true

Is ajax;success a jQuery event? If so, you will need to delegate it to a normal event. You can check