As what you suggested earlier, I gathered up an idea tried to implement my queries in the true_false field and I got carried away that the true_false field is fully modified by me and will not be able to serve its purpose anymore. So I created a custom field type instead 😀 out of it.
This is actually a good experience to me and a new learning for today. I succesfully created a “Top[N] Field Type” as what I called it 😀 and it works perfectly.
Thank you for the advise @elliot, really appreciate it.