Change type of trait

Hello. I need help. I created trait in Mod constructor as personality trait. But I don´t want it in CAS and select it as CAS trait, but I want it in Reward store. How can I set my custom trait in Reward store, if I can choose in MC 4 only Personality trait, Hidden trait, Gameplay trait and Aspiration trait? Thanks for help. I don´t know, how set it as Reward trait. Help me, please.