Strategy.setStop

[atlas]

This may be simple, but how do you use setStop in combination with a doBuy or doSell where you open on Strategy.NEXTBAR? In other words, if I open a position with

Strategy.doLong("Crossing Up", Strategy.MARKET, Strategy.NEXTBAR);

and I want to immediately put in a stop, how can I do this while setStop requires an actual price? How do I get the fill price for the NEXTBAR?

-Christian