获得前10根K线的高低点:

RH:HHV(HIGH,10),COLORDARKRED;

RL:LLV(LOW,10),COLORDARKYELLOW;

获得后10根K线的高低点: (AI的回答不生效)

RH1:REF(HHV(HIGH,10),-10),COLORDARKBLUE;

RL1:REF(LLV(LOW,10),-10),COLORDARKGREEN;

需要怎么来实现？