Key legal question
Whether the cantonal authority could rely on a prior final decision on hypothetical asset income when revising the garnishment.
Extracted holding
The complaint was insufficiently substantiated; the authority did not violate federal law by treating the issue as already finally decided.
Extracted reasoning
The same hypothetical asset income had already been addressed in the earlier cantonal appeal decision, and the debtor failed to show a breach of the rules on res judicata.