Add selection of objective function in PSO (Particule Swarm Optimization)

Hi, I need  the select  objective functions for PSO (as described in the file testspo.mq4)

  Sphere sphere;

  Griewank griewank;

  Rosenbrock rosenbrock;

Those objective functions will be included in the Optimystic MQ4

The context comes from here : 

https://www.mql5.com/en/blogs/post/683577

The problem is quite often I got the message "No Optimum",

so I would like to relaunch the PSO with another type of objective function.

(well, the first choice will be Rastrigin and if it fails , I want to use the Rosenbrock, or whatever)

For this project, the files which have been updated and improved, instead of the one provided on the threads regarding PSO

are in attachment

I will provide the EA