alexa skills kit - How do I define a custom slot type that isn't a list

alexa slotPlay one of several different slot machines, including an exciting progressive jackpot that grows based on aggregate play. You start with 50 coins and can play from 1 to 5 coins per spin. LostBuilt-in slot types can be used to cover slot values for broad categories like dates or Animals without having to manually create a list of values yourself. This allows you to build skills