Special Ability Problem

[sablevarg]

I've got a tall order for anyone who can help:
I had a request to create a Sage class. The 1st level special ability is supposed to be called Knowledge Specialty, you pick a skill & a category within that skill (ex: History - Ancient kingdoms) & you get your Proficiency Bonus added.

My first problem: I want the choices limited to Arcana, History, Investigation, Medicine, Nature & Religion - but they don't necessarily need to be proficient in the skill.
I can get it to allow all skills or just the ones their proficient in, but I can't seem to quite get where I want to go.

My second problem: I want it listed under the chosen skill, listed as Specialty: Ancient Kingdoms +2
I found the code [#situational[hero.child[skHistory],"Specialty +2",field[name].text]], but I can't get it to recognize my skill choice where skHistory is & I can't seem to get the specialty sandwiched in the quote. It wigs out whenever I try variables.

Any help would be very appreciated.
thank you in advance.