Marbled Chocolate Cheesecake

• 2 eggs
• 1 unflavoured gelatin (envelope)
• 1 chocolate crumb crust
• 220 ml skim milk
• 180 gr low-fat cottage cheese
• 160 ml milk to a (boil)
• 100 gr vanilla wafer crumbs
• 60 ml skim milk (cold)
• 26 gr sugar
• 9 gr vanilla extract