Ah sorry .. did not realize it was probably due to your account being new not sure the discourse rules but I imagine it will change after a bit.
You might want to report that to @bcopeland as a driver issue. Looks like it is different between Zooz devices - my Zen24 V4 dimmer works as expected by setting that parameter.
Another thing to try as a workaround is install the community "Basic Z-Wave Tool" driver. This will allow you to change any parameter manually bypassing the properties page. To do this copy paste the driver code from the link into the "Drivers Code" section. Then go to your device page and temporarily change the driver "Type" to "USER / Basic Z-Wave Tool". You can set the parameter from there. Change the driver back when done - do not hit "configure" as it might override your changes.
