RGBWW switch/dimmer on/full light/night light/off options grayed out

[altserg]

Hi all,

I've created a dummy RGBWW dimmer/switch. I control the light device manually using dzVent switch device change events. All is ok in terms of control.
However, in domoticz interface, the default "on/full light/night light/off" options are grayed out and disabled. See the picture. The options are always grayed out, even when I enter some dummy script name in "on/off action" fields

How can I enable the default options ?