it's weird...
i started 4 differents new game...it's working every time...
start game, activate 2 first scripts, launch your new/saved game, select yes/on/enabled then tick box
once you control your character press start once to show stats menu, then start again to come back to action...
from here,if you press start once to open stat menu then start again to close it, it should instantly refill your hp bar...
works like a charm with my version of the game... will take a look tomorrow.....if other people can give their feeback....it would help..thx