Associate Controller to a Library

Hi !

I am trying to associate a library to my station to not have this popup.

So far I succeeded in :
- create my controller 
RsIrc5Controller _controller = new RsIrc5Controller(path);

- Add in my station

- Get my Robot
var robot = newStation.Children.FirstOrDefault(p => p.Name == "IRB1200H_5_90_STD_01") as Mechanism;

I don't know where to go from here. Someone can help ? Thank you in advance.