Wis. Stat. § 816.08
The court or judge may order any property of the judgment debtor or due to the judgment debtor, not exempt from execution, to be applied toward the satisfaction of the judgment; but if it appear that any person alleged to have property of the judgment debtor or to be indebted to the judgment debtor claims an adverse interest in the property or denies the debt, such interest or debt shall be recoverable only in an action against such person by the receiver; and a transfer or other disposition of such property or interest may be restrained till a sufficient opportunity be given to the receiver to commence the action and prosecute the same to judgment and execution or until security therefor shall be given as ordered.
Wis. Stat. § 816.08
In a supplementary proceeding, no issue can be tried between a receiver or judgment creditor and a 3rd person as to rights in property. DOR v. Milwaukee Mack Sales, 91 Wis. 2d 1, 280 N.W.2d 274 (1979). Supplemental proceedings under this chapter are a discovery tool in aid of judgment collection. Serving a debtor with an order to appear for supplemental proceedings does not give rise to a blanket lien on all of the debtor's personal property. A judgment creditor obtains an interest in a judgment debtor's identified, non-exempt personal property superior to other unsecured creditors when it dockets its money judgment, identifies specific personal property, and levies that property. Associated Bank N.A. v. Collier, 2014 WI 62, 355 Wis. 2d 343, 852 N.W.2d 443, 11-2597.