bin/option_data in ib-ruby-0.5.19 vs bin/option_data in ib-ruby-0.5.21

@@ -29,15 +29,15 @@
 # In this case, we just print out the tick.
 #
 # (N.B. The description field is not from IB TWS. It is defined
 #  locally in forex.rb, and is just arbitrary text.)
 ib.subscribe(:TickPrice, :TickSize, :TickOption, :TickString) do |msg|
-  puts @market[msg.data[:id]].description + ": " + msg.to_human
+  puts @market[msg.ticker_id].description + ": " + msg.to_human
 end
 
 # Now we actually request market data for the symbols we're interested in.
 @market.each_pair do |id, contract|
-  ib.send_message :RequestMarketData, :id => id, :contract => contract
+  ib.send_message :RequestMarketData, :ticker_id => id, :contract => contract
 end
 
 puts "\nSubscribed to market data"
 puts "\n******** Press <Enter> to cancel... *********\n\n"
 STDIN.gets