A profitable-looking chart can coexist with a losing position in a custom MetaTrader 4 report. The discrepancy often begins in the script’s accounting assumptions rather than the broker’s execution records. Price movement is only one input; contract units, currency conversion and booked charges determine what ultimately reaches account equity.
For mt4 trading, diagnosing a faulty profit figure means tracing the calculation from the selected order to the displayed result. Five distinct errors can distort CFD exposure and, in some cases, prompt an automated strategy to close or enlarge a position for the wrong reason.
A Price Difference Is Not Yet an Account-Currency Profit
Subtracting the opening price from the current price works only as an intermediate calculation. The script must also account for trade direction, volume and the instrument’s monetary value per price increment. MODE_TICKVALUE and MODE_TICKSIZE can help, but their reported values and units should be checked against the broker’s contract specification, particularly for non-forex CFDs.
A common coding error treats one quoted point as one currency unit per lot. Another multiplies by the displayed number of decimal places instead of the actual tick size. Both can produce a plausible figure with the wrong magnitude. Verify the contract size and tick economics before trusting a homemade profit formula.
Conversion Rates Can Make a Correct Local Gain Look Wrong
Imagine a hypothetical share CFD quoted in Swedish kronor, with each contract representing one share and an account denominated in euros. A position of 800 shares rises from SEK 125 to SEK 128, generating SEK 2,400 in gross profit. At an illustrative conversion rate of SEK 11.20 per euro, that equals approximately €214.29.
If the script mistakenly assumes ten kronor per euro, it reports €240, overstating the result by €25.71. The chart correctly shows a three-krona gain; the error occurs after the price calculation. Conversion rates may also change between entry and exit, so the script should distinguish an estimate for an open position from the broker’s booked result.
Commission and Swap Can Reverse a Small Gross Gain
OrderProfit() reports trading profit or loss without the separate commission and swap components. A script that labels this figure as net profit may encourage an exit based on money that the account has not actually earned.
For an appropriately selected order, OrderCommission() and OrderSwap() supply additional booked components. A gross gain of $18 accompanied by $12 commission and $9 negative swap produces a $3 net loss. Overnight financing becomes especially relevant when a CFD is held through several rollover periods. Confirm how the broker records charges and whether the report includes them once, rather than omitting or duplicating them.
Selecting the Wrong Order Can Contaminate the Entire Report
In MQL4, OrderProfit() and related functions read the order currently selected by OrderSelect(). A loop that fails to check selection success, filters only by symbol or mixes open orders with account history can attribute another trade’s result to the position under examination.
For mt4 trading scripts managing several strategies on one account, ticket numbers, magic numbers and order types matter. Position-based selection also does not guarantee a stable chronological ordering. Log the selected ticket and its symbol before extracting figures, and avoid assuming that the last item in a loop is the latest closed trade.
Floating Profit and Realized Profit Require Different Comparisons
An open position’s floating result changes with executable prices, while a closed order has a realized result recorded in history. Comparing a live estimate with a chart’s last traded price can introduce apparent discrepancies because long positions are generally closed at bid and shorts at ask. Spread widening can therefore reduce floating profit even when the midpoint chart barely moves.
A more elaborate dashboard can actually make diagnosis harder if it combines live marks, closed trades and projected financing into one unlabeled total. Before opening a CFD position, run the script against a demo trade, record its ticket, contract specification and account currency, then reconcile its gross profit, commission and swap separately with MT4’s order records.
