Hi,
I have reviewed your code and noticed a few points that we can improve to optimize the behavior of the trailing stop.
1)Resetting stoploss on every bar: As your code stands, the stoploss is reset to 0 on each bar due to the third line in your code, which makes it start from 0 on every candle. This can interfere with the correct functioning of the trailing stop. A solution would be to initialize the stoploss only once using the ONCE instruction, ensuring that the values are not reset constantly.
2)Separate the stoploss condition for longs and shorts: It’s important to manage the stop separately for long and short positions. This will avoid any confusion in tracking the trailing stop for each position type.
3)Reset the stoploss only when the position has exited: In your current code, you reset the stoploss inside the LONGONMARKET or SHORTONMARKET conditional blocks (it means every bar). Instead, I suggest moving the reset of the stoploss outside of those blocks, so that it only resets when we are no longer in the position, ensuring that we have completely exited the market.

Here’s a modified version of the code with these adjustments:

// Initialize stoploss only once
ONCE stoploss = 0
ONCE stoplossSH = 0

// Long position management
IF LONGONMARKET THEN
  IF stoploss = 0 THEN
    // Initial stop loss for long position
    stoploss = close - Trailstart * pipsize
  ENDIF
  // Dynamic stop loss for long position
  IF close - stoploss >= TrailStep * pipsize THEN
    stoploss = close - TrailStep * pipsize
  ENDIF
  // Sell at stop loss
  SELL AT stoploss stop
ENDIF

// Short position management
IF SHORTONMARKET THEN
  IF stoplossSH = 0 THEN
    // Initial stop loss for short position
    stoplossSH = close + Trailstart * pipsize
  ENDIF
  // Dynamic stop loss for short position
  IF stoplossSH - close >= TrailStep * pipsize THEN
    stoplossSH = close + TrailStep * pipsize
  ENDIF
  // Exit short position at stop loss
  EXITSHORT AT stoplossSH STOP
ENDIF

// Reset stoploss values only when we have exited the position
IF NOT LONGONMARKET AND stoploss <> 0 THEN
  stoploss = 0
ENDIF

IF NOT SHORTONMARKET AND stoplossSH <> 0 THEN
  stoplossSH = 0
ENDIF