请老师写个通达信选股公式：最近10天内KD指标的K值连续3天大于80

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;
XG:BARSLASTCOUNT(K>80)>=3;