Modifying Power Points by a skill level

[Gumbytie]

Okay, this is the objective. The arcane skill used to "cast" modifies the amount of Power Points based on the skill level.

d4 Skill = 2 starting power points
d6 Skill = 3 power points
d8 Skill = 4 power points

etc.

The character can ALSO still take the Edge Power Points for even more additional PP.

So I have a script that is not quite getting what I want:

foreach pick in hero where "component.Arcane"
var powbonus as number
powbonus = hero.tagis[Skill.skCBDeepConnect]
debug powbonus

~ Half Deep Connection die in Power Points
eachpick.field[resMax].value += powbonus
nexteach

So that is giving me a constant bonus of 1 additional Power Point. I am pretty sure I am not getting it correct in this part:

hero.tagis[Skill.skCBDeepConnect]

The desire is that should adjust best on the skill level as above listing. So, does anyone have some suggestions how to get my math correct?