Discussing the article: "Engineering Trading Discipline into Code (Part 2): Building a Daily Trade Limit Enforcer for All Trades in MQL5"
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Check out the new article: Engineering Trading Discipline into Code (Part 2): Building a Daily Trade Limit Enforcer for All Trades in MQL5.
We have developed a system that enforces a daily trade limit to keep you aligned with your trading rules. It monitors all executed trades across the account and automatically intervenes once the defined limit is reached, preventing any further activity. By embedding control directly into the platform, the system ensures discipline is maintained even when market pressure rises.
Limiting the number of trades per day is one of the simplest risk control rules a trader can define. In practice, however, it is also one of the easiest to violate. This applies not only to discretionary traders, but also to accounts where several Expert Advisors operate simultaneously across different symbols. A rule such as “no more than N entries per day” quickly loses effectiveness when market pressure increases, when performance fluctuates, or when multiple strategies act independently without coordination.
The core issue is not the absence of discipline, but the absence of enforcement at the account level. MT5 does not natively provide a centralized mechanism that defines what qualifies as an entry, how a trading day is measured, or what must occur once a predefined limit is reached. Without precise definitions—whether an entry is based on DEAL_ENTRY_IN, positions, or orders; whether the session resets at server midnight or at a custom time; whether the control applies across all symbols—the rule remains conceptual rather than structural.
This article develops a Daily Trade Limit Enforcer in MQL5 designed to operate at the account level. The system counts confirmed entry deals within a configurable session window, monitors trading activity across all symbols, and enforces the limit automatically. Once the defined threshold is reached, new pending orders are removed and newly opened positions are closed, while existing positions established before the limit remain unaffected.
Author: Christian Benjamin