Problem with HP calculations

Sup people! I've been searching over and over but I still can't find the solution. I'm working on a public source to get better in C# (Fixing the bugs etc..) and now I'm stuck with the JiangHu system. It seems that when I train and get for example Max~HP+450(Epic) it shows the HP bonus in the red balloon but it's stuck at 20.000 on 30.000. I mean that when I take potions, the HP doesn't fill up.

Can anyone give me an advice please?

Thanks. :)

1. increase itemhp not maxhitpoints
(then the itemhp will be added to maxhitpoints after reloading all the stats)

2. check the aligment power.