Hi ! My Name is chaminda and iam from Sri Lanka. I currently use a Lumix GF6 for my photography, but since the camera doesn't have a hot-shoe i have a issue with an external flash. So i heard that you can use a wireless flash with this camera, and i got a Vivitar SF-4000 Slave Flash. But i have not been able to configure it to work with the camera. Can someone please give me some helpful advice as to how to go about this??