HmIP-FROLL current_position shows only 0 or 100

I have got two awnings (Markise in german), controlled by a HmIP-FROLL, which shall be rolled in when the wind is to strong. In the CCU there is a value “Behanghöhe” or value LEVEL in the chanel 3 which represents the percentage of the visible awning. But in HA i only get the extreme values. Is there a way to get the real values to HA, so i can make an automation when there is a minimum of one or more percent visible.

An old HM-LC-Bl1PBU-FM shows the true value :frowning: