[zwave] Coolcam sirene / configuration changes on the fly possible?

Thanks!!!

I’ve tried to add item base on this instruction:

as follows:

Switch Siren_Switch "Syrena switch" <alarm>  {channel="zwave:device:69348d40:node19:switch_binary"}
Number Siren_Config "Syrena config" <sound>  {channel="zwave:device:69348d40:node19:config_decimal"}

and in sitemap:

    Text label="Syrena" {
        Default item=Siren_Switch
        Setpoint item=Siren_Config minValue=1 maxValue=2 step=1
    }

However, changing Siren_Config does not seem to have any effect. Do i need to import somehow config file into openhab2 to make it working?
I can not see any reference to this channel in:

$ cat /var/lib/openhab2/zwave/node19.xml | grep CONFIG
    <commandClass>CONFIGURATION</commandClass>
      <commandClass>CONFIGURATION</commandClass>

I could not find any way to importing this config.