This code snippet demonstrates how to set and enforce a weekly profit limit in a trading strategy using the ProBuilder language. The strategy resets the profit calculation at the beginning of each week and disables trading once the profit exceeds a predefined limit.

ONCE MyProfit = 0 //Use this variable to tell when your profit exceeds X
ONCE TradeON = 1 //1=trading enabled, 0=trading disabled
ONCE X = 500 //500 € max weekly profit
IF OpenDayOfWeek = 1 AND OpenDayOfWeek[1] <> 1 THEN //at week start
    MyProfit = StrategyProfit //save the total profit at the start of the week
    TradeON = 1 //re-enable trading
ENDIF
IF (StrategyProfit - MyProfit) >= X THEN
    TradeON = 0 //disable trading after X € gained
ENDIF
IF MyLongConditions AND Not OnMarket ANd TradeON THEN //add TradeON as an additional condition to enter a trade
    BUY 1 Contract AT Market
ENDIF

The code snippet above is structured to manage trading based on weekly profit limits:

• Initialization: Three variables are initialized using the ONCE keyword. MyProfit tracks the profit at the start of the week, TradeON is a flag to enable or disable trading, and X sets the maximum weekly profit limit.
• Weekly Reset: At the start of each week (when OpenDayOfWeek equals 1 and the previous day’s OpenDayOfWeek was not 1), the script resets MyProfit to the current StrategyProfit and re-enables trading by setting TradeON to 1.
• Profit Check: During the week, the script checks if the current profit (StrategyProfit - MyProfit) has reached or exceeded the limit X. If it has, trading is disabled by setting TradeON to 0.
• Trade Execution: A trade is executed only if the conditions defined in MyLongConditions are met, the strategy is not currently in the market (Not OnMarket), and trading is enabled (TradeON).

This approach helps in managing risk and ensuring that the trading strategy adheres to specific financial goals or constraints.