Here you have:

//----------------------------------------------
// PRC_Market Structure Trend Matrix
// version = 0
// 10.06.26
// Iván González @ www.prorealcode.com
//Original author: BigBeluga
//Sharing ProRealTime knowledge
//----------------------------------------------
// === Parametros (exponer como variables del indicador) ===
//----------------------------------------------
msLen = 10           // longitud de estructura (pivots: lookback y lookahead)
atrLength = 14       // periodo del ATR
atrMult = 4.0        // multiplicador ATR del trailing stop
targetStepMult = 2.0 // distancia entre targets consecutivos (x ATR)
showHistory = 1      // 1 = dibujar los targets ya alcanzados
showStop = 1         // 1 = dibujar trailing stop + relleno
//----------------------------------------------
// === Colores (alcista verde / bajista magenta) ===
//----------------------------------------------
bullR = 52
bullG = 230
bullB = 126
bearR = 255
bearG = 82
bearB = 241
//----------------------------------------------
myAtr = averagetruerange[atrLength]
pivotWindow = 2 * msLen + 1

once direction = 0   // 0 = estructura bajista, 1 = alcista
once started = 0     // 1 tras el primer ChoCh
once phVal = 0
once plVal = 0
once phIndx = 0
once plIndx = 0
once phReady = 0
once plReady = 0
once atrTS = 0
once entryPrice = 0
once currentTarget = 0
once trendStart = 0
once hitCount = 0
//----------------------------------------------
// === Deteccion de pivots (confirmados msLen barras tarde) ===
//----------------------------------------------
if barindex > 2 * msLen then
   if high[msLen] >= highest[pivotWindow](high) then
      phVal = high[msLen]
      phIndx = barindex - msLen
      phReady = 1
   endif
   if low[msLen] <= lowest[pivotWindow](low) then
      plVal = low[msLen]
      plIndx = barindex - msLen
      plReady = 1
   endif
endif
//----------------------------------------------
// === ChoCh alcista: cierre cruza el ultimo pivot high en estructura bajista ===
//----------------------------------------------
if phReady = 1 and direction = 0 and close crosses over phVal then
   direction = 1
   started = 1
   hitCount = 0
   atrTS = close - myAtr * atrMult
   entryPrice = phVal
   currentTarget = entryPrice + myAtr * targetStepMult
   trendStart = barindex
   labelX = round((phIndx + barindex) / 2)
   drawsegment(phIndx, phVal, barindex, phVal) coloured(bullR, bullG, bullB) style(line, 2)
   drawtext("ChoCh ↑", labelX, phVal + myAtr * 0.4) coloured(bullR, bullG, bullB)
endif
//----------------------------------------------
// === ChoCh bajista: cierre cruza el ultimo pivot low en estructura alcista ===
//----------------------------------------------
if plReady = 1 and direction = 1 and close crosses under plVal then
   direction = 0
   started = 1
   hitCount = 0
   atrTS = close + myAtr * atrMult
   entryPrice = plVal
   currentTarget = entryPrice - myAtr * targetStepMult
   trendStart = barindex
   labelX = round((plIndx + barindex) / 2)
   drawsegment(plIndx, plVal, barindex, plVal) coloured(bearR, bearG, bearB) style(line, 2)
   drawtext("ChoCh ↓", labelX, plVal - myAtr * 0.4) coloured(bearR, bearG, bearB)
endif
//----------------------------------------------
directionChange = 0
if started = 1 and direction <> direction[1] then
   directionChange = 1
endif
//----------------------------------------------
// === Trailing stop + cascada de targets ===
//----------------------------------------------
if started = 1 then
   if direction = 1 then
      atrTS = max(atrTS, close - myAtr * atrMult)
      if high >= currentTarget then
         if showHistory = 1 then
            perc = round((currentTarget - entryPrice) / entryPrice * 10000) / 100
            drawsegment(trendStart, currentTarget, barindex, currentTarget) coloured(bullR, bullG, bullB) style(dottedline, 1)
            drawtext("+#perc#%", trendStart, currentTarget) coloured(bullR, bullG, bullB)
         endif
         currentTarget = currentTarget + myAtr * targetStepMult
         hitCount = hitCount + 1
      endif
   else
      atrTS = min(atrTS, close + myAtr * atrMult)
      if low <= currentTarget then
         if showHistory = 1 then
            perc = round((currentTarget - entryPrice) / entryPrice * 10000) / 100
            drawsegment(trendStart, currentTarget, barindex, currentTarget) coloured(bearR, bearG, bearB) style(dottedline, 1)
            drawtext("#perc#%", trendStart, currentTarget) coloured(bearR, bearG, bearB)
         endif
         currentTarget = currentTarget - myAtr * targetStepMult
         hitCount = hitCount + 1
      endif
   endif
else
   atrTS = close   // antes del primer ChoCh: pegado al precio (alpha 0, no distorsiona escala)
endif
//----------------------------------------------
// === Target activo: solo en la ultima barra, proyectado 10 barras ===
//----------------------------------------------
if islastbarupdate and started = 1 then
   if hitCount = 0 then
      activeAlpha = 255
   else
      activeAlpha = 153
   endif
   if direction = 1 then
      drawsegment(trendStart, currentTarget, barindex + 10, currentTarget) coloured(bullR, bullG, bullB, activeAlpha) style(line, 2)
   else
      drawsegment(trendStart, currentTarget, barindex + 10, currentTarget) coloured(bearR, bearG, bearB, activeAlpha) style(line, 2)
   endif
endif
//----------------------------------------------
// === Color + visibilidad del trailing stop (alpha toggle) ===
//----------------------------------------------
if direction = 1 then
   r = bullR
   g = bullG
   b = bullB
else
   r = bearR
   g = bearG
   b = bearB
endif

stopAlpha = 255
if showStop = 0 or started = 0 or directionChange = 1 then
   stopAlpha = 0
endif

areaAlpha = 60
if showStop = 0 or started = 0 then
   areaAlpha = 0
endif

colorbetween(close, atrTS, r, g, b, areaAlpha)
//----------------------------------------------
return atrTS as "ATR Trailing Stop" coloured(r, g, b, stopAlpha) style(line, 2)