In need of code text for the OnTester() function to create custom max criteria in MT5's Strategy Tester for genetic optimizations

I am looking for someone to write code text for the OnTester() function that I can paste into my Expert Advisor code. Prior versions of MT5 Strategy Tester had the option "Balance + max Profit Factor" that could be used for genetic optimizations. This criteria is no longer available so I would like someone to write the code for it that I can paste into my projects to be used with genetic optimization criteria "custom max". This custom max criteria needs to optimize EAs during genetic optimizations based on the criteria of maximum account balance and maximum profit factor (Balance x Profit Factor). I only need the text of this code, I will add it myself to my EAs.