Vlad not working with cinderhulk jungle item :(

I wanted to try something new and fun out that seemed slightly OP but you dont get 25% of the HP from his passive that you get from building AP even though his passive says "bonus HP" and cinderhulk is meant to provide % of bonus HP. I thought this could really work well with Cinderhulk+Pool+gromp bonus late game. Also you dont get extra AP from the Extra HP cinderhulk does give you if you build HP. Pretty lame. Please Fix.