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Reproduce, fix, verify

MQL4 and MQL5 Bug Fix or Modification

A bounded repair or modification for an Expert Advisor, indicator or script when you can provide editable source and a reproducible expected result.

What is included

  • Compile, runtime and affected-flow diagnosis
  • One agreed bug fix or clearly bounded feature
  • Experts and Journal log review when supplied
  • Corrected editable source and compiled build
  • Concise change summary and verification steps

What I need from you

  • Editable MQ4/MQ5 source and required includes
  • Current behaviour and expected behaviour
  • Exact reproduction steps, symbol and timeframe
  • Relevant logs, screenshots and terminal build

Scope boundaries

  • No EX4/EX5 decompilation or protected-code extraction
  • A revision covers the agreed issue, not unrelated features
  • Performance changes are measured, never promised

Source-backed proof

View the public MT5 risk-control example

Open on MQL5.com

Free scope resource

Free MT5 Broker Environment Report

Run this privacy-conscious open-source MQL5 script on the affected symbol to capture the broker and symbol settings needed for a faster diagnosis.

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Free preparation guide

MQL5 Expert Advisor Bug Report Checklist

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