Convert a small indicator from MQL4 to MQL5

Describe the general underlying idea in the first part of the Requirements Specification. Example: "If the price approaches the resistance level twice and rolls back from it, the next time it is likely to break resistance." Here you can add a chart with the resistance/support lines, indicators and explanatory notes. Exact numbers or calculation algorithms are not required in the idea description. So, in this example we do not need to explain how to determine: