Key legal question
Whether the appeal challenged all independent grounds upholding the maintenance contribution.
Extracted holding
The appeal did not address the cantonal court's alternative ground based on hidden assets and therefore failed the federal motivation requirements.
Extracted reasoning
The appellant attacked only the imputed income of CHF 5,500, but left untouched the finding that he could also pay from concealed assets and even from an imputed income of CHF 3,000.