How to find the highest price in 1 year ?

I used the max syntax but  it couldnt ? who can help me ?

Thank you !

Have a look at the function HHV - that should do what you want.

Note also that MetaStock works on trading days aka bars.  There are roughly 250 bars in a year and this varies according to holidays etc.

Cheers,
Richard.

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    For a specific year you might try:
a1:=If(Year()=2006 AND C>PREV,C,PREV);
a2:=LastValue(a1);
a2
  Ugly but it works (I think).