Bonjowi has presented former Constitutional Court Justice Maruarar Siahaan as an expert witness in a hearing regarding the University of Gadjah Mada’s (UGM) appeal. UGM is contesting a decision made by the Central Information Commission (KIP) that deemed President Joko Widodo’s academic credentials to be public information. The appeal was filed with the Jakarta State Administrative Court (PTUN). Bonjowi is challenging UGM’s grounds for objection, arguing they are incorrect. Siahaan’s testimony aims to clarify the legal aspects of the case and the KIP's ruling. The case centers around access to information regarding President Jokowi’s educational history, a matter of public interest. The outcome of the appeal will determine whether UGM is required to release the requested information.