agent_issue.rb

class Agent
  attr_accessor :field1, :field2, :field3 
end 

fields = ['field1', 'field2', 'field3']

hsh = {'field1' => "a", 'field2' => "b", 'field3' => 'c' }

ag = Agent.new 
fields.each do |field| 
 ag.eval("#{field} = #{hsh[field]}") 
end

# errors with private method "eval"