Is my function not working, or is it shoes?

[Timothy McDowell]

ef roll die
  a = nil
  if (a = die.match(/([0-9]+)d([0-9]+)/))
    answer = 0
    a[1].to_i.times do
      answer += rand(a[2].to_i) + 1
    end
    return answer
  else
   para "Not a valid die type."
  end
end

Shoes.app do
  @text = para "Type a die roll into the box, and then hit enter. Ie: 2d6"
  flow do
    @editline = edit_line
  end
  keypress do |k|
    case k
      when :enter
        a = roll @editline.text
        para a.to_s
        @text.replace a
    end
  end
end

There is my code. I know my 'roll' method works fine. When I hit 'enter'
when the editline has focus, nothing happens... any help?

-- 
--Brains.