Hi Romeo Trader

The solution to your problem is to use the Forum DLL. The syntax for the variable HHV function is ExtFml( "Forum.HHV", Data Array, Variable Period).

You can download this file form the Files section of this forum. The file you need to download is ForumDll_200. Since the name is quite a handful I have changed its name to Forum.DLL in all my MetaStock versions rather than use the more verbose ForumDll200 moniker. It's not as though a MetaStock formula has unlimited space, so why use a long name when a shorter one works just as well?

Copy the file into the "External Function Dlls" folder and then restart MetaStock.

Roy

Hi Romeo

From memory I think that the Manual for the "Forum" DLL relates to ForumDll_112, an earlier version than the one I pointed you to. Be aware that syntax is different for some functions, and the selection of functions is also a little different.

Once the DLL is installed (and therefore recognised by MetaStock) there's an easy way to check what functions are available and what the syntax for each is. It's possible to have both the old and new Forum DLLs resident in MetaStock with different names.

Create a new indicator in the Indicator Builder,
click in the Formula window,
click the Functions... button,
mark Forum in the Function Category window,
and read off the functions in the Paste Functions window.

An even easier way to find functions provided by the 188KB Forum DLL is to check out the list below. Hope this helps.

Roy

ExtFml("Forum.CSAR",Low Array,High Array,Step);
ExtFml("Forum.DateRange",FirstDate,LastDate);
ExtFml("Forum.Latch",LE,LX,SE,SX);
ExtFml("Forum.Random",Min,Max);
ExtFml("Forum.TDCOMBO");
ExtFml("Forum.AroonDown",Data Array,Periods);
ExtFml("Forum.AroonUp",Data Array,Periods);
ExtFml("Forum.BBandBot",Data Array,Periods, deviations);
ExtFml("Forum.BBandTop",Data Array,Periods,deviations);
ExtFml("Forum.CCI",Periods) ;
ExtFml("Forum.CMO",Data Array,Variable Period);
ExtFml("Forum.Correl",INDEPENDENT Array,DEPENDENT Array, Periods) ;
ExtFml("Forum.HHV",Data Array,Variable Period);
ExtFml("Forum.HHVBARS",Data Array,Variable Period);
ExtFml("Forum.LLV",Data Array,Variable Period);
ExtFml("Forum.LLVBARS",Data Array,Variable Period);
ExtFml("Forum.MACD",Data Array,Slow Periods,Fast Periods);
ExtFml("Forum.MOM",Data Array,Variable Period);
ExtFml("Forum.MOV",Data Array,Variable Period,Method);
ExtFml("Forum.PriceChannelHigh",Data Array, Periods);
ExtFml("Forum.PriceChannelLow",Data Array,Periods);
ExtFml("Forum.RSquared",Data Array,Periods);
ExtFml("Forum.ROC",Data Array,Periods,(0 | 1));
ExtFml("Forum.Ref",Data Array,Variable Period);
ExtFml("Forum.RSI",Data Array,Variable Period);
ExtFml("Forum.Stdev",Data Array,Periods,Deviation);
ExtFml("Forum.Stoch",Periods);
ExtFml("Forum.Sum",Data Array, Variable Period);
ExtFml("Forum.TSF",Data Array,Periods);
ExtFml("Forum.TRIX",Data Array,Periods);

I think you need to backward ref your formulae, because the LLV and HHV include the current bar.

problem solved! thank you very much!
not only are these my initial approaches to Metastock, but even to programming in general! so I still need to fully catch the logic behind functions, formulas, etc... but all this stuff looks extremely interesting I must say and this excellent forum just gives me more motivation :-)

Thank you for your suggestion Roy, which I will follow for sure! ;-)

cheers.

Romeo.