Zambuck , thanks for your help. I have received the fallowing formula from equis suport:
{ yesterday's high }
newday:=ROC(DayOfWeek(),1,$)<>0;
ValueWhen(1,newday, Ref(HighestSince(1,newday,H),-1));
{ yesterday's low }
newday:=ROC(DayOfWeek(),1,$)<>0;
ValueWhen(1,newday...