Before any transferee shall have the benefit of § 7712 of this title, the transferee shall file in the court, or before the justice of the peace where such proceedings are instituted, a statement of the sum due from the defendant with an affidavit that it is wholly unpaid.
18 Del. C. 1953, § 7713; 56 Del. Laws, c. 460; 70 Del. Laws, c. 186, § 1.