好像A点价格取值

编写要求：

MA1:MA(CLOSE,P1);MA21:REF(MA1,1);RSV:=(CLOSE-LLV(LOW,9))/(HHV(HIGH,9)-LLV(LOW,9))*100;K:=SMA(RSV,3,1);D:=SMA(K,3,1);J:=3*K-2*D;b:=if(CROSS(K,D),h,0);a:=if(ref(cross(k,d),1),h,0);;（显示0 错了）DRAWTEXT( cross(k,d) ,h*1.01 ,'这次金叉B高点价'+b),colorwhite;DRAWTEXT( cross(k,d) ,h*1.02 ,'上次金叉A高点价'+a),colorwhite;（显示0 错了）DRAWTEXT(b,h,NUMTOSTR(b)),Color00FFFF,LINETHICK2,ALIGN2;

解答：