Is the fixture your using just RGBW? I assume its an LED? If so, have you tried using the generic RGBW fixture in the library? It will give you the option to use the individual Intensities OR Hue and Saturation.
Is the fixture your using just RGBW? I assume its an LED? If so, have you tried using the generic RGBW fixture in the library? It will give you the option to use the individual Intensities OR Hue and Saturation.