Cannot get signal for wireless clients

[axel619]

Hi, I have OPNsense 21.1-amd64 installed on a Pc Engine apu2e2 (AMD GX-412TC SOC). I setup a wifi access point which is working flawlessy, clients connect and navigate without problems.
I need to get the signal/rssi for each wireless client, which should be available with the shell command 'hostapd_cli all_sta'. I see the clients but the signal is fixed to 96 or 112, it never changes.
In the web panel, Interfaces --> Wireless --> Status I can see the clients with correct dynamic signal.
How do I get the information? Rest Api? Another shell command? Do you have any suggestion?
I tried the same Hostapd setup on a Raspberry Pi and the signal is not fixed, it changes.