Specific brightness HM-Sen-MDIR-O-2 as a condition

Hello, this is my first question and I hope I’ve included all the information you need to help me.
For info: I use Homematic and Homematic IP devices…
I would like to use a certain brightness of a Homematic (without IP) ‘Wireless Motion Detector Outdoor “HM-Sen-MDIR-O-2” as a condition for the trigger. However, I have no way of entering this when I select the brightness option.
Am I doing something wrong?
Screenshot attached.
Greetings Daniel