Hi! I'm the friend Juliet's asking on behalf of. The scenario I've got isn't dealing with party members at all. I'm using Roll 20 as a mapping and space layout system, since it understands objects and positioning, and one of the things I need to calculate is "how many boxes can we store for how much cost if we lay it out this way as opposed to that way". So I've got bookshelf "NPCs" with different identities -- one type has 6 shelves in 7 feet of height but only stores three boxes per shelf, another type has 5 shelves in 6 feet of height but stores 5 boxes per shelf. And each of them cost different amounts -- so I could give each NPC type its price as its HP. But also they're not all bought or assembled yet. So what I'm hoping this theoretical macro could do would be something along the lines of "Okay, right now we've got 5 6-foot shelves and 2 7-foot shelves built and IDed. Add up those 7 NPCs' "cost" HP, and that's how much we've got invested; add up their AC and that's how many boxes we could store. Okay, we had another working weekend, we built 4 more shelves, let's drag 4 more shelf NPCs into the right spot, now what does it look like..." Is this doable, or am I dreaming? :D