Developing a Random Stats program to make MyLeague more fun (Need Help)

I'm developing a program to do random stats on my league to make it more fun to play for example change free agency of certain guys, change their potential and things like that, but i want to know if someone know about any Tutorial on making a trainer or the source code of one because i am having a hard time finding how to send that information to the game certain strings..

I'm trying to use 2K21 tools by EYEUC to do that by the (pasting from clipboard) function but i want to automate it for example for my program to interact with theirs if anyone gets what i'm saying. any help would be appreciated

having something that automates roster export/import would be sth i am interested in, too.