Ultimate Psionics - Favored Class Options

[Quintain]

I'm working on a FCO for Half-giants that increases the manifester level (caster level) of the psychic warrior's path powers.

The problem lies in the fact that a path power is a chosen item, and I'm unsure on how to modify that manifester/caster level.

What I have so far:

field[abValue].value += field[fcCount].value / 2

doneif (field[abValue].value = 0)

perform assign[Helper.ShowSpec]

field[livename].text = signed(field[abValue].value) & " to manifester level for path powers."

hero.childfound[cPWaPathPo].field[usrChosen1].chosen.field[???Caster level??].value += field[abValue].value

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I'm unsure of how to reference a caster level for a specific power/spell that is being chosen by a different thing.

Suggestions?