I recently installed a Fibaro Walli Roller Shutter to my roller shutter

I included the Roller Shutter via domoticz via "include node secure" That all went well. Then I added the device as a Switch. I then change the switch type to "Blinds Percentage Inverted"
The roller shutter is opening, closing en stopping when I push the buttons.
Domoticz wil refresh the info on the switch. But I can't change it from Domoticz. I would like to close the shutter via Domoticz or change the percentage of open.
Can anyone help me to accomplish this?
Thank you in advance.