I have an old Stairville HL40 XDM (iColor4) now has these two modes, one already exists as a ssl2 file, but I would like to use the other, which has 4 channels for red, blue, green and yellow.
If I now create RGBY patches, or even create a file in the editor, I always only have RGB with the color picker and Y is not touched. so if I select yellow in the color picker, I also want the yellow channel to be controlled. Is this possible? if yes how

Thanks in advance
~Hypey