Hi,
I use z-wave for my rollershutters and do what you are trying.
Firstly you need to be using the Lighting tag not Switchable to use percents.
I use a Dimmer type item with the same channel as the Rollershutter one and define it as Lighting.
Then in Alexa I also add routines on Alexa to add commands like open and close.
Something I should have noticed before, and it may just be my lack of language abilities but you said that you are trying “Living Room 90%” but the text on your item says “Wohnzimmer West”, this should be what Alexa responds to.
sorry this is a Translation problem. I am from Germany and my item called: “Wohnzimmer West”. For the better understanding I have translate it to “Living Room” My Alexa understand the Item and say ok but it didn`t move. Light, Temperature, etc. works perfect with alexa.
is there anything appearing the logs when you try to use Alexa?
I use Hue Emulation myself, but I think when you change the tags, if you are using myopenhab, you may have to remove the item and allow it to repopulate in your myopenhab setup.
and a big Rule-File for all Rollershutters like this example here
rule "Buero West Voice Control"
when
Item Buero_West received command
then
logInfo("Buero_West", "Rollo Büro West Voice Control")
if (receivedCommand < 50)
{
sendCommand(Shutter_gC_Office_West, UP)
}
else
{
sendCommand(Shutter_gC_Office_West, DOWN)
}
end