You have to name the channel according to your thing.
so it would be something like:
Rollershutter KNX_Wohnzimmer_links "Rollo Links [%d %%]" <rollershutter> (GF_LivingRoom) { channel="knx:device:ce7e05c5:13" }
In my case:
Rollershutter knx_rolladen_wohnen "Rolladen [%d %%]" <rollershutter> (gRolladen, gWohnen) { channel="knx:device:bridge:rollershutter_eg:rolladen_wohnen" }