POPP z-wave smoke detector node config options

Hi,

I try to integrate a Popp 009402 z-wave 10-Year Smoke Detector.

4 z-wave node config options are available:

1: Siren alarm sequence interval
2: Siren alarm tone length
3: Value of On-Command
4: Value of Off-Command

example of siren alarm tone lenght settings:

see pic 1

the initial value seems to be 8 but in fact the real value is 0

see pic 2

Every attempt to change this value to something else result in value 0

see pic 3

The same problem with the 'siren alarm sequence interval"

The two remaining settings 3 and 4 can be changed normally.

Anny help to resolve this? Thanks