ZigZag Validity by Spyros Raftopoulus

["Theo Lockefeer" <sky40912@xxxxxxxxx>]

Hello friends,
 
Did someone manage to get the formaula
 
on page 30 of August Stocks and 
Commodities
 
to work OK in Metastock 6.52 ?
 
I get an error when i type the formula in 
Indicator
Builder.
 
Thanks 
 
 
Theo