I was exploring various trading strategies and custom indicators on the Web and saw several interesting examples in the AmiBroker library and this forum, in particular "Head & Shoulders Pattern" and "Historical Trendlines and Breakouts" at http://finance.groups.yahoo.com/group/amibroker/message/50689
But the problem is that these scripts use either SelectedValue or LastValue functions, which restrict script execution to a single point only (either to the selected bar or to the last bar). As the result, these scripts cannot be used for backtesting or as an indicator (because a good indicator should display a value for each bar, not only for a single one). I see that Dimitris Tsokakis wrote "Move the cursor [to the left or to the right] to see the formation changes.". But this is not a workable solution! It will take years for me to manually move custor over thousands of stocks in the database! I need some automated way to backtest these scripts. Basically, I need to make a loop and assign either the SelectedValue or LastValue programmatically, then invoke the script as a function. But these values appear to be read only. For example, SelectedValue = 123; generate an error. Any suggestions? Thank you John
