A solution for "Problem in script help (shoes)" posted by Lark Work in ruby-talk ML.

ppid_on_shoes.rb

Shoes.app :title => "PPID", :height => 400, :width => 700 do
  background black, :height => 60
  background gradient(rgb(1.0, 1.0, 1.0, 0.7), rgb(1.0, 1.0, 1.0, 0.0))
  title "PPID", :align => "center", :stroke => white
  caption "Personal: Person Info Database", :top => 80, :left => 20
  stack :top => 85, :left => 380 do
    flow do
      name = edit_line :width => 150
      button "Search" do
        ds = SomeDataProcessing.openOn("PPIDdata.txt")
        @eb.text = ds.showData(name.text)
      end
      button "List" do
        dl = SomeDataProcessing.openOn("PPIDdata.txt")
        @eb.text = dl.showlistData(name.text)
      end
    end
  end
  @eb = edit_box :width => 250, :height => 200, :top => 140, :left => 380

#< between here there is a other part of the script but that is working fine>

  class SomeDataProcessing
    Person = Struct.new :name, :last_name, :phone_number, :birthday, :city, :adress
    def self.openOn(p_file)
      new(p_file)
    end

    def initialize(p_file)
      @file    = p_file
      @persons = {}
      loadData
    end

    def listData
      @persons.keys.sort.each {|p| showlistData(p)}
    end

    def loadData
      File.foreach(@file) do |line|
        name, last_name, phone_number, birthday, city, adress = line.chomp.split(",")
        @persons[name] = Person.new(name, last_name, phone_number, birthday, city, adress)
      end
    end

    def showData(p_name)
      person = @persons[p_name]
      if person.nil?
      then
        @show_text2 = "#{p_name} not in database."
      end
      #stack do
        @show_text2 = "Name: #{person.name} #{person.last_name}\n" \
          "Phonenumber: #{person.phone_number}\n" \
          "Birthday: #{person.birthday}\n" \
          "City: #{person.city}\n" \
          "Adress: #{person.adress}"
      #end
      #edit_box @show_text2, :width => 250, :height => 200, :top => 140, :left => 380
    end

    def showlistData(p_name)
      person = @persons[p_name]
      if person.nil?
      then
        @show_text3 = "#{p_name} not in database."
      end
      @show_text3 = "#{person.name} #{person.last_name}"
      debug @show_text3
      @show_text3
      #edit_box @show_text3, :width => 250, :height => 200, :top => 140, :left => 380
    end
  end
end

PPIDdata.txt

ashbb,shoes,010-223-3356,2011.3.11,Tokyo,Japan