对KD指标进行了改写，为什么从6.3后面就没数据了，请教一下。如下图

HighestValue = HighestFC(High, Length);

LowestValue = LowestFC(Low, Length);

RSV =XAverage( XAverage((close-LowestValue)/(HighestValue-Lowestvalue)*100,SlowLength_kd),SlowLength_kd);

If(RSV <> 0)

{

KValue =  RSV;

}Else

{

KValue = 0;

}

DValue = xAverage(KValue,SmoothLength);