Shaban 

Hi, Kevin, thanking you for the formula, Tradestation 8.2 reports this error:"Cannot implicitly convert Numerical to TrueFalse" marketposition[1] in these 2 strings (see attached picture): If marketposition=1 and marketposition[1]<>1 then begin If marketposition=-1 and marketposition[1]<>-1 then begin [img]https://i.postimg.cc/XYZNW3jp/Errore-nella-formula-dettaglio.jpg[/img] I thank you in advance

That is not the same code I posted, you changed "mp" to "marketposition". "mp" is a function, it might not be in version 8.2 of Tradestation.

Go back and use the original version I posted, and at the top of the strategy add the statements:

var:mp(0);
mp=marketposition;


and then it should work fine.

Thanks Kevin, now the formula also works with Tradestation 8.2.

This was really good, i don't even use tradestation but it was worth watching. Highly recommended