This code snippet demonstrates how to implement a breakeven trading strategy using percentage thresholds in the ProBuilder language. The strategy adjusts the stop-loss order to a breakeven point after a specified percentage gain, aiming to secure a portion of the profits.

defparam cumulateorders = false
startBreakeven = 0.1 //how much percentage in price gain to activate the breakeven function?
PercentToKeep = 0.05 //how much percentage in price to keep in profit above or below our entry price when the breakeven is activated (beware of spread)
c1 = RSI[14] crosses over 50
if c1 then
    BUY 1 LOT AT MARKET
    SET STOP %LOSS 1
endif
//reset the breakevenLevel when no trade are on market
IF NOT ONMARKET THEN
    breakevenLevel=0
ENDIF
// --- BUY SIDE ---
//test if the price have moved favourably of "startBreakeven" percent already
IF LONGONMARKET AND positionperf>=startBreakeven THEN
    //calculate the breakevenLevel
    PointsToKeep = (tradeprice(1)/100)*PercentToKeep
    breakevenLevel = tradeprice(1)+PointsToKeep
ENDIF
//place the new stop orders on market at breakevenLevel
IF breakevenLevel>0 THEN
    SELL AT breakevenLevel STOP
ENDIF
// --- end of BUY SIDE ---
// --- SELL SIDE ---
//test if the price have moved favourably of "startBreakeven" percent already
IF SHORTONMARKET AND positionperf>=startBreakeven THEN
    //calculate the breakevenLevel
    PointsToKeep = (tradeprice(1)/100)*PercentToKeep
    breakevenLevel = tradeprice(1)-PointsToKeep
ENDIF
//place the new stop orders on market at breakevenLevel
IF breakevenLevel>0 THEN
    EXITSHORT AT breakevenLevel STOP
ENDIF
// --- end of SELL SIDE ---

The code snippet above is structured to manage trading orders based on the performance of the current position relative to a set percentage gain:

• Initialization: Sets defparam cumulateorders to false to ensure each order is treated individually.
• Trigger Condition: A buy order is placed if the RSI crosses over 50, which is a common momentum indicator used to signal potential entry points.
• Breakeven Calculation: Once the position gains a specified percentage (startBreakeven), the code calculates a new stop-loss level (breakevenLevel) that aims to secure a portion of the profits defined by PercentToKeep.
• Order Adjustment: If the breakeven level is greater than zero, the stop-loss order for a long position is adjusted to this new breakeven point. Similarly, for short positions, the stop order is adjusted to secure profits.
• Market Exit: The script also handles the exit for short positions by setting a stop order at the calculated breakeven level.

This strategy helps in minimizing losses and protecting gains by dynamically adjusting stop-loss orders based on market performance relative to the entry point.