第一步，先取得KDJ指标中J的值，jj=:"KDJ.J"第二步，给jj按要求改值
100 3j 1 100 3RSV:=(CLOSE-LLV(LOW,N1))/(HHV(HIGH,N1)-LLV(LOW,N1))*100;K:=SMA(RSV,N2,1);D:=SMA(K,N3,1);J:=3*K-2*D;(k>d)and(j<20);
