I have an existing MetaTrader 5 Expert Advisor that I only possess in .ex5 form. I need it re-worked so the strategy is properly optimised—specifically, I want deep parameter tuning that lifts overall performance while keeping the behaviour safe and fully controllable. What matters most to me: • Strategy optimisation is the priority; I’m looking for measurable gains that come from systematic parameter sweeps in the Strategy Tester rather than from adding new indicators. • The EA must include a “safety-lock” function: when preset limits are reached it should suspend trading and require a manual (or timed) reset before it can resume. • I expect transparent before-and-after reports so I can see exactly where profitability improves and how risk stays contained. Your deliverable is the optimised EA in both commented .mq5 and compiled .ex5 formats, plus the optimiser report and a concise change log. I’ll run it on a demo account for final validation before sign-off.