Cactus / crossing variegation

The variegation over a nudum body shows a clear distinction.
I do not have a variegated nudum plant. People said "A variegated plant should be used as father plant when you want to create new varigated plants."

I have a varigated Astrophoytum asterias and try to crossing over variegation onto Ruri kabuto (nudum). The variegated asterias was in flower yesterday but the Ruti kabuto was not. I collected pollen. Pollen will be dried and kept in a gelatin capsule, and be stored in fridge until flowering of Ruri kabuto.