請問，上一次盈利類型怎么得到？

nn1:=barslast(ref(holding>0,1) and holding<=0 and numprofit(1)>0);

nn2:=barslast(ref(holding<0,1) and holding>=0 and numprofit(1)>0);

nn1>nn2 就是平空

nn1<nn2 就是平多

nn1:=barslast(ref(holding>0,1) and holding<=0 and numprofit(1)>0);

nn2:=barslast(ref(holding<0,1) and holding>=0 and numprofit(1)>0);

nn1>nn2 就是平空

nn1<nn2 就是平多