[Jack-Devel] Not able to Switch Audio devices from drop down menu

Hi Team, Hope you are doing good! I am facing a problem in using jack in my application. Need your valuable help on this. I am able to loop back the audio through one headphone connected to the PC. I am just looking to switch the headphone for loop back. please guide me how i can perform this task. I am able to connect to the jackd server as client using jack client open API. As per my understanding I need to pass the device name in the command line arguments to jackd server executable which i am running to run the server. but it is always using the default port audio device for audio processing. I am working on windows 10 system. Please let me know if any other information is required from my side. please help. I appreciate your inputs in advance. Thanks. Regards Ankur Sharma 9990304661