Bonus hit points for each character level

[Wolf_Larsen]

Hi, Thanks for all the past help.

I'm creating a template (Paragon, page 209 in "Epic Level Handbook") that, among other benefits, gives the character 12 extra hit points for every level they have. So if a character has 20 total levels, they will have an extra 240 hit points. Another way to say this is that every time the character goes up a level, they receive an extra 12 hit points from having this template. These extra hit points are also retroactive, so that if the character was at 10th level before chosing this template, the template would also give 120 extra hit points for those existing levels.

What is the Eval Script??? for this?
Thanks, Wolf

[Mathias]

Here's +1 HP/HD (UserPreAt, 100):

~Count the number of hit dice
var HD as number
HD = hero.tagcount[Hero.HitDice]
~ Add to our HP
hero.child[Totals].field[tHP].value += HD