Kernrechtsfrage
Whether the cantonal authority violated the right to be heard or the duty to establish the facts by relying on older financial data and refusing further evidence.
Extrahierter Entscheid
No. The father had not offered evidence of his current financial situation before the cantonal authority, so there was no violation of the right to evidence or the inquisitorial principle.
Extrahierte Begründung
The parties must collaborate and present relevant facts and evidence. The authority may refuse further evidence by anticipatory assessment, and new facts raised only before the Federal Court are inadmissible.