Would this work?

I have searched the entire godamn net for a resource that breaks maxDamage and energy out of the datablocks, thats completly compatiable with v 1.5 but alas, i found nothing. So i was thinking of an alternate plan: i simply add a variable to the player object called something along the lines: "hp" and simply deduce theh p as the player takes damage. When the hp reaches subzero, i simply use the damagemethod to deal 101 damage to the playerobject, and use a similiar technique on energy. Is this stupid or would it be viable? If someone could kindly post a link to an maxDamage breaker resource for 1.5 that would also works. And i have tried damage breakers for earlier versions too, but they never seem to work. One worked to some extent, but when the object reached 0 health, it did not die. Thankfull for answers and other generic nettiquette.