Rails - Mar 2007 - Trouble with Rails and Lib-Based modules

I am trying to create modules and classes based in the Rails lib
directory for my application to call. However, when ever I try and
output the result of a method in the class, all that is returned is a
pound sign. Does anyone have any idea why it is outputting this? I used
the module examples from the Programming Ruby book''s site , and this
code:
class TestModelController < ApplicationController
        def index
                require ''ScaleDemo''
                validate = ScaleDemo.new
                render :text =>  validate.to_s
# Always returns "#"
        end
end

lib/ScaleDemo.rb

module MajorScales
  def majorNum
    @numNotes = 7 if @numNotes.nil?
    @numNotes # Return 7
  end
end


module PentatonicScales
  def pentaNum
    @numNotes = 5 if @numNotes.nil?
    @numNotes # Return 5?
  end
end


class ScaleDemo
  include MajorScales
  include PentatonicScales
  def initialize
    puts majorNum # Should be 7
    puts pentaNum # Should be 5
  end
end


ScaleDemo.new


Thanks for your help and time.

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