regarding controller in Web API

Question

to whom it may concern, 

 

Iam doing a project in visual studio using asp.net core 2 Web API. I imported all my tables from ym database using Entity Framework. There is an autogenerated controller called ValueController. Now I had created another controller i need it to a specific model. But the question is how would I related to the default controller? Because whenever Iam writing something in my new controller whenever I debug it it only read what is written in the default controller. 

 Did you get my point ?