This is the code, but it will return tons of lines, you’ll have to filter them!

// Période
p = 10
 
// Average True Range X
ATRx = AverageTrueRange[p](close) * 3.0
 
// ATRts = ATR Trailing Stop
// Inversion de tendance
IF close crosses over ATRts THEN
ATRts = close - ATRx
//r=0
//g=200
ELSIF close crosses under ATRts THEN
   ATRts = close + ATRx
   //r=200
   //g=0
ENDIF
 
// Cacul de l'ATRts lors de la même tendance
IF close > ATRts THEN
   ATRnew = close - ATRx
   IF ATRnew > ATRts THEN
      ATRts = ATRnew
   ENDIF
ELSIF close < ATRts THEN
   ATRnew = close + ATRx
   IF ATRnew < ATRts THEN
      ATRts = ATRnew
   ENDIF
ENDIF

x = 0
IF close > ATRts THEN
   x = 1
ELSE
   x = 2
ENDIF
SCREENER [x] (x AS "1=above/2=below")

That limit cannot be changed, as of this version of PRT.

You could duplicate the screener and have one of them return only 1’s and the other only 2’s. This way you’ll double the list, but will also double the screeners you’ll have to open.

If you don’t have problems with the number of screeners open, you can select commodities on one of them, currencies on a duplicate, and so on!

There’s no workaround.

You could, for example, only stocks NOT above/below, but those where a crossing over/under is occurring, replacing lines 33-37 with:

IF close CROSSES OVER ATRts THEN
   x = 1
ELSIF close CROSSES UNDER ATRts THEN
   x = 2
ENDIF

or scan those stocks that are not just above/below now, but have been above/below for at least the last 3 bars, or setting an increasing number to sort them, one screener showing the first 50 lines, another one another 50 lines… I’ll work on that!

filters are the only chance to get less than 50 lines!