/*backtest
start: 2024-10-15 00:00:00
end: 2024-11-15 00:00:00
period: 1m
basePeriod: 1m
exchanges: [{"eid":"Futures_CTP","currency":"FUTURES"}]
*/
var obj = $.NewPositionManager(); // 使用发明者量化交易类库
var band = []; // 定义全局变量 band
var pos_dir = '--'
var pos_amount = '--'
