C# How do you create and use a spot color

Hi all

I'm able to create CMYK colors by the following code

Color colorName = application.CreateCMYKColor(0, 93, 95, 0);

But I need to create a spot color with a specific name to use as an cutline for our cutter. The color is not important, but I need to give it a specific name "cut"
I see the application.CreateSpotColor method, but I cant figure out how to use it.

Any suggestions?

Thanks