Homekit blinds/curtains/damper differentiation

Hello,

I have a problem with blinds/curtains in HomeKit that I was unable to solve.

When I ask Siri: close all the blinds

It closes blinds, curtains and even the ventilation damper whereas I ask only for the blinds.

These are connected using KNX as cover and they have their device_class configured as blinds curtains or damper.

Is there any way to configure them that Homekit/Siri makes a difference ?

I did indicate in Apple Home that they are different. But it seems to only change the icon.

Thanks