Mostly good!
My current understanding of the fibaro command class protocol for the FGRM is the following:
[tt]0x91 0x1 0xf 0x26 <blind %> <tilt %>[/tt]
: 1 = SET, 2 = ? (GET, I guess), 3 = REPORT
: 1 = SET, 2 = ? (GET, I guess), 3 = REPORT
<blind %>: 0 to 99%, 0 = fully closed, 99% = fully opened
<lamellas %>: 0 to 99%, 0 = vertical, 99% = horizontal
It seems that blind % and tilt % can’t be changed simultaneously.
When using command #1 for , & <blind %> seems to be ignored
So to change <blind %>, it seems that using command #2 for works.
Still need to do more test, and as I don’t have any Fibaro documentation of their proprietary protocol this is just plain guessing.
So disclaimer here: you are on your own, if you break something due to this, I’m not responsible – use at your own risk!
So, to change blind position from a LUUP scene (an easier way is to use the standard ZWave dimmer command, this is just to verify my understanding of the protocol):
[tt]blind_position=0 – closed, acceptable values: 0 to 99 (in %)
luup.call_action(“urn:micasaverde-com:serviceId:ZWaveNetwork1”,“SendData”,{Node=“”, Data=“145 1 15 38 1 2 " … blind_position … " 0”}, 1 )
[/tt]
To change lamellas orientation :
[tt]tilt=50 – change tilt to 50%, acceptable values: 0 (vertical) to 99 (horizontal) (in %)
luup.call_action(“urn:micasaverde-com:serviceId:ZWaveNetwork1”,“SendData”,{Node=“”, Data=“145 1 15 38 1 1 0” … tilt}, 1 )
[/tt]

Next step: implement a nice standard dimmer control to wrap this in a nice and standard UI!
Next next step: implement automatic lamella tilt by tracking the sun during the day!