MultiGate: forward and back

Hi guys,
I need your help to a little issue. I’m using a multigate to change the light color. I have 4 different color, for example: blue, green, yellow, white. Multigate allows to change in this order, but what can I do to invert the order? If I want to change from yellow to green?

Thank you and Regards

Cristian

If you share a screenshot on how you have it set up, we might be of more help.