Help needed: Cover current_position (values only 0 or 100)

Configuration
1

Hello Community,

I have been using Home Assistant as a VM (core-2021.2.3, Home Assistant OS) for about a year.

After a long unsuccessful search in the forums, I am turning to you with this new thread.

In addition to the BROLL wall switches, I also control my roller shutters via Home Assistant. Unfortunately, Home Assistant only shows me 0 or 100 as the current_position.

{{ state_attr('cover.eg_buero_rollladen', 'current_position') | int }}

or

{{ state_attr('cover.eg_buero_rollladen','current_position')}}

This means that for {{ states('cover.eg_buero_rollladen') }} it only shows me closed or open.
However, it should always show open if {{ state_attr(‘cover.eg_buero_rollladen’,‘current_position’)}} is less than 100.

In configuartion.yaml I have included the CCU3 (Raspmatic) like this:

homematic:
  interfaces:
    ip:
      host: 192.168.178.34
      port: 2010
      resolvenames: json
      username: !secret homematic_username
      password: !secret homematic_password
    groups:
      host: 192.168.178.34
      port: 9292
      resolvenames: json
      username: !secret homematic_username
      password: !secret homematic_password
      path: /groups
  hosts:
    ccu3:
      host: 192.168.178.34
      username: !secret homematic_username
      password: !secret homematic_password

Can you help me or do you need more information?