Hello everyone, I need help please for the same Problem.
My Hardware:
#1 Raspberry Pi 3 Modell B+ with openhabian-pi-raspbian-201908050414-gitca0976f-crc6a66b5a1.img.xz
#2 ZMEEUZB1 (Z-WAVE Controller)
#3 Fibaro Roller Shutter 3 (FGR223)
My problem is that the RollerShutter stands there as an unknown device. I read everywhere that you can expand the database on cd-jackson.com. And the device is also listed there
https://www.cd-jackson.com/index.php/zwave/zwave-device-database/zwave-device-list/devicesummary/983
But how do I get this device into my database of Openhab? 
I also read a lot of XML files … but dont know what i want to do with the xml file?
Can someone please tell me step by step how I can extend the database… please 
Thank You!