making a custom id with advanced.database.useNumberId = true not working

const auth = betterAuth({
database: prismaAdapter(db, {
    provider: "postgresql",
  }),
advanced: {
    database: { useNumberId: true },
  },
  databaseHooks: {
    user: {
      create: {
        before: async (user) => {
          let randomId = generateRandomInt();
          // To check if there's a user with this ID
          while (await db.user.findUnique({ where: { id: randomId } }))
            randomId = generateRandomInt();
          return {
            data: {
              ...user,
              id: randomId as unknown as string,
            },
          };
        },
      },
    },
  },
})