CA Civ Proc Code Section 720.350

(a)

Subject to the power of the court to permit an amendment in the interest of justice:

(1)

The third-party claim constitutes the pleading of the third person.

(2)

In the case of a third-party claim by a secured party, the creditor’s statement constitutes the pleading of the creditor.

(b)

A third-party claim of ownership, right to possession, or a lien, shall be deemed controverted by the creditor.