users_params = ['600203389', '616487321', '622242409', '622280776', '625902608', '626383823', '628421395', '628922862', '633623378', '635232596', '635496283', '636931966', '639565592', '644360760', '644376209', '645909745', '658539781', '659039288', '659417827', '660119737', '666261379', '666279407', '668829310', '670495225', '675319539', '677320912', '677635338', '679628257', '680831293', '686272477', '687998501', '693777289']
    users = User.find(:all, :conditions => ['login in (?)', users_params ])
    paid_users = []
    users.each do |user|
      if user && !user.payment_requested.nil?
        fail = false
        begin
          UserPayment.pay(user)
          user.reload
          paid_users << user
        rescue Exception => msg
          fail = true
          puts "* user [#{user.login}] : Impossible to pay to this user: " + msg
        end
        paid_users << user unless fail
        puts "* user [#{user.login}] : user paid " unless fail
      else
        if user.nil?
          "* user [#{user.login}] : This user does not exists "
        else
          "* user [#{user.login}] : Any payment requested by this user "
        end
      end
    end