Pacs: how can you reserve your entire inheritance for your partner?

"I'm currently in a civil union with my partner and we have two children. I also have a child from my first marriage. We each own 50% of an apartment. I'd like to bequeath the entire usufruct to my current wife, but above all, I don't want to bequeath it to my child from my first marriage. What can I do?" Notary Marie-Hélène Péro Augereau-Hue answers your questions on the BFM Business program "Le Club du Droit / Passez-moi le notaire".