# File lib/stella/core_ext.rb, line 317
  def update(*args)
    field_names.each_with_index do |field,idx| 
      val = args[idx]
      val = case field_types[field].to_s
      when 'Float' 
        val.to_f
      when 'Integer'
        val.to_i
      else
        val
      end
      send("#{field}=", val)
    end
    self
  end