I have been able to specify the path and the arguments as part of the properties to invoke the application. However, what I can see is that the application is getting launched when I press on 'Start Interrogation'. But the bull's eye disappears after some time. Any clue on why this could be happening?
If the application is within Citrix, you will need to have Studio installed on the same computer as the application is running on to perform interrogation. This means either installing Studio on the Citrix server, or installing the application locally to allow you to interrogate it. This is what we call mixed-mode and will ultimately require Runtime be installed both locally and in Citrix. I would suggest you work with your account contacts to arrange assistance from the Pega Robotics Services team, as this can be a challenging endeavor to implement the first time. Here are a couple good resources on what it will take and some limitations.