If I code a trading system with ELD code language within Tradestation 9 on S&P500 I get an equity curve. Now what I want is : to make a new trading system based on that equity curve. I want to see (graph must be visible), test (this means, that I can apply rules) and optimize this equity curve. Simply said : it is a trading system on a trading system. I should do apply rules like moving average, bollinger bands and other indicators which lead to a new trading system. All should be done within Tradestation 9. Maybe you need to code dll or other script.