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