Obtaining the highest high for the past 250 periods

ok there's no proble with this. its a simple indicator
If(HIGH>Ref(HHV(HIGH,250),-1),1,0);

but the problem is that it causes error pop up when the chart is only has past half year data. so i would want to make the error not show up and still carry out it's task
this is what i tried:

If( IsDefined( Ref(C, -250) ),If(HIGH>Ref(HHV(HIGH,250),-1),1,0) , 0);


unforturnately it doesnt work yet =( . can anyone please help?

-wahkao

The above code will return the highest High of the last 250 bars (not days), which will result in breakout signal errors on securities that have halted trading for any period of time in the YTD.

Furthermore, a yearly breakout based on bars lookback does not work on any periodicity other than daily.

Lastly, there are a number of good reasons for avoiding the use of MetaStock DLLs where MSFL will do the job.

Wahkao, try this code for accurate year-breakout signals:

---8<-----------------------------------------

{ Replacement solution for H>Ref(HHV(H,252),-1)
on all securities.
http://www.metastocktools.com }

{ Signal a year back from last trading day }
start:=Year()>LastValue(Year())-1
OR (Year()=LastValue(Year())-1
AND (Month()>LastValue(Month())
OR Month()=LastValue(Month())
AND DayOfMonth()>=LastValue(DayOfMonth())));
yearAgo:=start AND Alert(start=0,2);

{ Add signal if insufficient data }
yearAgo:=If(LastValue(Cum(yearAgo))>0,yearAgo,
Cum(1)=1);

{ Price breakout }
Hi:=HighestSince(1,yearAgo,H);
breakout:=H>Ref(Hi,-1);

{ Signal output }
{yearAgo;}
breakout

---8<-----------------------------------------

jose '-)