What you're doing is correct but LEDBlinky uses the emulator name as passed by your front-end, so it depends on the FE configuration. Try this, run a game (via the FE) for each VBA emulator, then from the Controls Editor check the unknown games list (Import menu). That should show you what info the FE is passing to blinky. If you still can't get it working, turn on the debug/verbose logging, run some games, then email me the debug.zip file.