Walk forward optimization on my Expert

Hello everyone, I already have an expert, I would like to add an option for back test analysis "Walk forward optimization" on top of this expert.

Where in the optimization it will run with different re-training intervals that can be optimized and at the end it will return to me which was the best optimization interval given the criteria.

I found a product in the community but unfortunately the person doesn't support those who don't know how to program c++ (my case).

If you search for WalkForwardOptimizer you'll find plenty of open source examples to get you started.
There is already a bookstore in mt5 https://www.mql5.com/en/blogs/post/677264.
I just need to include it in my advisor .