Trying to scrape our website and create a csv file. Noobie here. Getting error on the copying of the data from the hash to the csv. I dont know what I have screwed up. Please help.

search1.rb

require 'rubygems'
require 'nokogiri'
require 'open-uri'
require 'mechanize'
require 'csv'

BASEURL = "http://www.pbm-erson.com"
BASEURL1 = "http://www.pbm-erson.com/Catalog/PBM/Camshafts_PBM/Performance_CPBM?&sortby=2&pageSize=5&page="
HSH = Hash.new
RESULTS = []
BRY = Array.new #attribute name array from products
LAST_PAGE_NUMBER = 2 #last page to stop on
ARR1 = []
$bsv

#go through and get links for each product page
CSV.open("results-test.csv","w") do |csv|
  #$bsv = csv
  #def csvwrite
   # csv << $bsv
  #end
  def csvheader (bry)
    #csv << bry
    puts bry
  end

  def find_link
    puts " Finding Links"
    item_info_css = ".item-info"
    product_item_row = ".item-row"
    product_num = "span.item-num"

    for current_page_number in 1..LAST_PAGE_NUMBER
  	  url = "#{BASEURL1}#{current_page_number}"
  	  puts url
  	  doc = Nokogiri::HTML(open(url))
  	  products = doc.css(item_info_css)
  	  products.each do |product|
  		  product_nodes = product.css(product_num)
  		  links = product.css('a')
  		  linkref = links[0]["href"]
  		  raw_results = BASEURL + linkref
  		  RESULTS << raw_results
  		  sleep 1
  	  end
  
    end
    puts RESULTS#finding links
  end #find_link



  def build_att_name_array
    BRY.push("ProductID:")
    BRY.push("Name:")
    BRY.push("Short Description:")
    BRY.push("HTML Content:")#building attribute name list
    puts "Building Table Headers"
   
    RESULTS.each do |link|
	    url = link
	    doc = Nokogiri::HTML(open(url))
	    doc.css(".attribute-list-item").each do |attrib|
		    att = attrib.at_css("span.attrib-name").text
		    BRY << att
		  end	
	    sleep 1
    end
  end #build_att_name_array
  #need to verify the lining up of the code from here down
  def find_att_value
    puts "Matching attributes to attribute name"
    hry = BRY.uniq
    
    RESULTS.each do |link|
      url = link
      doc = Nokogiri::HTML(open(url))
      erp_num = doc.at_css("span.erp-num").text.strip #our part number from Sxe
      short_desc = doc.at_css(".pd-header").text.strip # short description
      long_desc = doc.at_css(".product-cm").text.strip #html content
      id = doc.at_css("input#CurrentProductId")['value'] #ID number in console

      hry.each do |ab|
          if ab == "ProductID:"
            HSH[ab] = id
          elsif ab == "Name:"
            HSH[ab] = erp_num
          elsif ab == "Short Description:"
            HSH[ab] = short_desc
          elsif ab == "HTML Content:"
            HSH[ab] = long_desc
          else
            begin
              els = doc.search"[text()*='#{ab}']"
              el = els.first
              eln = el.next_element.text.strip
              HSH[ab] = eln
            rescue
              HSH[ab] = ""              
            end #begin
          end #if    
          puts "-------------------------"
          puts HSH
          puts "-------------------------"

          HSH.each_value do |val|
            ARR1 << val
          end #HSH

          csv << ARR1 # ERROR - undefined local variable or method `csv'
          ARR1.clear
          HSH.clear
      end #hry
    end#RESULTS
    
  
  end #find_att_value

  find_link
  build_att_name_array
  bry = BRY.uniq
  csv << bry
  csvheader(bry)
  find_att_value
end