Attributes is the correct word - everything on a sheet is stored as either an Attribute or an Ability. Generally speaking, Abilities are like the built in rolls and contain macro code to output to chat, everything else is an Attribute. I'm not really sure what they do as I don't play PF, but I'd imagine rollmod_attack is the bonus to the d20 attack roll. The only way to be sure is to look at the values on different sheets and see what they are. attack_condition could be what you've guessed, again I'd be looking at some sheets and seeing what the contents are to work it out. You can try typing @{selected|rollmod_attack} into chat to grab the value from a linked sheet when you have a token selected, but I suspect they're part of a repeating row which means you'll get an "attribute not found" message. Which PF sheet are you using? Attribute names are different on every character sheet, and are entirely up to the sheet author. There's no base Roll20 system for naming, though some things are pretty common, like {hp} or {character_name}.
