integrate a diagnostic library into one model

Hi,

I have a library where should I enable/ disable some parameters which represent some function/subfunction of session of a diagnostic tools.

I have to integrate it into the model sending CANframes. The thinks I don't understand are: why if i disabled a function it still call it into the model. - how can I access the ECU address from which I want to read data (or how to build messages respond and request) - how could I call the library into model and if I have to build the sessions (define in model) because is said is enumerate type in stateflow

I'll apreciate a lot if you will help me. Thank you in advance