Initialize Live Link from blueprint?

Excuse the question, I’m pretty much a total newbie. I’ve written a new live link plugin and would like to have it initialized on begin gameplay. The plugin streams camera data from an external device. I’ve added the livelinkcontroller to my camera and it seems to remember what live link source I used last time but I have to select the source in the live link editor each time I launch unreal. I’d like to just have everything connect up automatically when I begin playing. I added a blueprint function to return the LiveLink source object but I can’t see how to connect it to the camera controller. Thanks for any help!