How to set a custom message with object type?

export const TestSchema = z.object({
  companyName: z
    .string()
    .min(2, "Company name must be at least 2 characters")
    .max(50, "Company name must be less than 50 characters"),
  companyId: z
    .string()
    .min(2, "Company ID must be at least 2 characters")
    .max(50, "Company ID must be less than 50 characters"),
  agreement: z.boolean(),
});

export const TestSchema = type({
  companyName: "2 <= string <= 50",
  companyId: "2 <= string <= 50",
  agreement: "boolean",
});