Connectivity

Hi, 

I'm trying to make a custom panel to perfom X-Y crosspoint actions. Of course there are premade soft panel but the aim here is to have somthing flexible with sources and destinations I want and just a take action with only certain level preselected without to have to select it on the panel...

So do you have an idea how to code such type of X-Y panel where I select a destination then a source then take and perfom the crosspoint for the levels delcared in the code? 

Best regards,