For example, on a chart for /ZWU11, I don't want to show trades until May of 2011. To do that I need the year from the symbol. Of course, I can manually input the year in the strategy. However, if I go from /ZWU10 to /ZWU11, I wish the strategy could pull from the symbol the "10" or the "11" so that trades are not shown on the chart for bars from the previous year. Thank you.