实盘时，历史bar的指标数据为什么是0？

Bool PrintBuyEntryInfo() { Data[0].nVarPlotValue_buy_1_left=Data[0].GetPlotNumericValue("MA","MA1"); Data[0].sVarCondition_buy_1_right = Data[0].GetPlotNumericValue("MA","MA1"); Data[0].nVarPlotValue_buy_2_left=Data[0].GetPlotNumericValue("MA","MA2"); Data[0].sVarCondition_buy_2_right = Data[0].GetPlotNumericValue("MA","MA2"); Data[0].nVarPlotValue_buy_3_left=Data[0].GetPlotNumericValue("MA","MA3"); Data[0].sVarCondition_buy_3_right = Data[0].GetPlotNumericValue("MA","MA3"); Data[1].nVarPlotValue_buy_1_left=Data[1].GetPlotNumericValue("MA","MA1"); Data[1].sVarCondition_buy_1_right = Data[1].GetPlotNumericValue("MA","MA1"); Data[1].nVarPlotValue_buy_2_left=Data[1].GetPlotNumericValue("MA","MA2"); Data[1].sVarCondition_buy_2_right = Data[1].GetPlotNumericValue("MA","MA2"); Data[1].nVarPlotValue_buy_3_left=Data[1].GetPlotNumericValue("MA","MA3"); Data[1].sVarCondition_buy_3_right = Data[1].GetPlotNumericValue("MA","MA3"); print("RealData0MaX(gMa1)：" + Text(RealData0MaX(gMa1))); print("RealData0MaX(gMa2)：" + Text(RealData0MaX(gMa2))); print("RealData0MaX(gMa3)：" + Text(RealData0MaX(gMa3))); print("RealData0MaX(gMa4)：" + Text(RealData0MaX(gMa4))); print("RealData1MaX(gMa1)：" + Text(RealData1MaX(gMa1))); print("RealData1MaX(gMa2)：" + Text(RealData1MaX(gMa2))); print("RealData1MaX(gMa3)：" + Text(RealData1MaX(gMa3))); print("RealData1MaX(gMa4)：" + Text(RealData1MaX(gMa4))); print("Data[0].nVarPlotValue_buy_1_left: " + Text(Data[0].nVarPlotValue_buy_1_left)); print("Data[0].nVarPlotValue_buy_2_left: " + Text(Data[0].nVarPlotValue_buy_2_left)); print("Data[0].nVarPlotValue_buy_3_left: " + Text(Data[0].nVarPlotValue_buy_3_left)); print("Data[0].sVarCondition_buy_1_right[1]: " + Text(Data[0].sVarCondition_buy_1_right[1])); print("Data[0].sVarCondition_buy_2_right[1]: " + Text(Data[0].sVarCondition_buy_2_right[1])); print("Data[0].sVarCondition_buy_3_right[1]: " + Text(Data[0].sVarCondition_buy_3_right[1])); print("Data[1].nVarPlotValue_buy_1_left: " + Text(Data[1].nVarPlotValue_buy_1_left)); print("Data[1].nVarPlotValue_buy_2_left: " + Text(Data[1].nVarPlotValue_buy_2_left)); print("Data[1].nVarPlotValue_buy_3_left: " + Text(Data[1].nVarPlotValue_buy_3_left)); print("Data[1].sVarCondition_buy_1_right[1]: " + Text(Data[1].sVarCondition_buy_1_right[1])); print("Data[1].sVarCondition_buy_2_right[1]: " + Text(Data[1].sVarCondition_buy_2_right[1])); print("Data[1].sVarCondition_buy_3_right[1]: " + Text(Data[1].sVarCondition_buy_3_right[1])); return True; }