关于用TB_SettlePrice获取结算价的问题

用TB_SettlePrice获取结算价，得到的结果始终是0，怎么回事，谁有示例代码，我参数一下我的代码如下：Vars Dic<Array<Numeric>> mysettleprice(\"TB_SettlePrice\"); //结算价 Dic<Array<Numeric>> mypricelimit(\"TB_PriceLimit\"); //停板比例 Series<Numeric> myuplimit; //涨停价 Series<Numeric> mydnlimit; //跌停价 OnBar(ArrayRef<Integer> indexs){.........................................//计算涨跌停价格 If(ExchangeCode==\"CZCE\") { myuplimit=RoundUp(mysettleprice[0][0]*(1+0.01*mypricelimit[0][0])/MinPoint,0)*MinPoint; mydnlimit=RoundDown(mysettleprice[0][0]*(1-0.01*mypricelimit[0][0])/MinPoint,0)*MinPoint; }Else If(ExchangeCode==\"DCE\") { myuplimit=RoundDown(mysettleprice[0][0]*(1+0.01*mypricelimit[0][0])/MinPoint,0)*MinPoint; mydnlimit=RoundUp(mysettleprice[0][0]*(1-0.01*mypricelimit[0][0])/MinPoint,0)*MinPoint; }Else If(ExchangeCode==\"SHFE\" or ExchangeCode==\"INE\") { myuplimit=RoundDown(mysettleprice[0][0]*(1+0.01*mypricelimit[0][0])/MinPoint,0)*MinPoint; mydnlimit=RoundDown(mysettleprice[0][0]*(1-0.01*mypricelimit[0][0])/MinPoint,0)*MinPoint; }Else If(ExchangeCode==\"CFFEX\") { myuplimit=RoundDown(mysettleprice[0][0]*(1+0.01*mypricelimit[0][0])/MinPoint,0)*MinPoint; mydnlimit=RoundUp(mysettleprice[0][0]*(1-0.01*mypricelimit[0][0])/MinPoint,0)*MinPoint; } Commentary(\"myuplimit:\"+Text(myuplimit));}最后输出的myuplimit一直是0是怎么回事呢