yes it is possible but you can only put 9999 in the stats of strength or dexterity or intelligence and vitality to the crusader for example I managed to put in 99999999 then strength, the barbarian if I made such I my save is corrupted after so the crusader you put 9999 and vitality as much as you want to strength, the demon hunter you can do with such dexterity but for other class you must remain here is a 9999 :)
And sorry for my bad english ;)
And sorry for my bad english ;)
