Damage Reduction +1 Modifier from Feat

[bodrin]

I've just entered the Greater Resiliency feat from the Complete Warrior this Eval Script for checking for Damage reduction works up to the point where it adds +1 to the Damage reduction

~ Check for Damage Reductiion as a Class or Innate Ability

hero.childfound[cBbnDR].field[hTotal].value += 2
    hero.childfound[cPfPTaDam1].field[hTotal].value += 2 
hero.childfound[cDwDDR1].field[hTotal].value += 2

~ We passed, so add +1 to our total  Damage Reduction.
hero.child[xDamRd].field[hTotal].value = hero.child[xDamRd].field[hTotal].value + hero.child[xDamRd].field[hTotal].value + 1
done

hero.child[cBbnDR].field[hTotal].value = hero.child[cBbnDR].field[hTotal].value + hero.child[xDamRd].field[hTotal].value + 1
done
                 
hero.child[cPfPTaDam1].field[hTotal].value = hero.child[cPfPTaDam1].field[hTotal].value + hero.child[xDamRd].field[hTotal].value + 1
done                  

hero.child[cDwDDR1].field[hTotal].value = hero.child[cDwDDR1].field[hTotal].value + hero.child[xDamRd].field[hTotal].value + 1
done

This Pre-Req script also works

Damage Reduction ability required.

@valid = pickexists[cBbnDR] + pickexists[cPfPTaDam1] + pickexists[cDwDDR1]

However it won't add +1 to the total Damage Reduction. Any ideas?