Fibaro RGBW when used in scenes

Hi - new user but can't find help on this.

Using Fibaro RGBW Controller with Hubitat 2.0.4.118.

In Devices, all functions are available as expected with multiple ways of setting colours (Separate RGB, Hue/Level/Sat,Color Map etc). and separate control over the warm-white channel my LEDs are using.

When creating a scene, I have a completely different set of parameters (Color Mode, Hue, Saturation and Dimmer level).

Why are they different? - are the scene settings abstracted in some way?
How can I set the warm white level as part of the scene?

Thanks

Does your Fibaro show up as a bulb or a dimmer in the scene? If available, select it in Bulb. then you should have an option to select between RGB and CT mode.

28-12-59-39

Thanks.

Yes - it shows up as a bulb as per your grab.
In CT mode I get:

"java.lang.IllegalArgumentException: Command 'setColorTemperature' is not supported by device. (activate)"

But CT mode is not what I need. If I want to set a pastel colour - i.e. RGB + Mix of white - I need separate control of RGB and W - as allowed by the device.

Thanks