Simply click on the sexen amount while cheats are on
I tried to but, it doesn't work.
You need to be in the "My status" menu, "Me" tab. There, you can see your sexen amount. Just click it.
I don't know if I'm blind, but I cannot see it.
You need to have reached the story point where Lily gives you access to her shop to see this btw.
ohhh