I am trying to set up as persuasion topic right now, but after looking at the way Bethesda handled them, I am flummoxed. Here is an example Papyrus fragment attached to a persuasion topic:

GetOwningQuest().SetStage(10)
DialogueFavorGeneric.Persuade(AKSpeaker)

My trouble is trying to keep this syntax results in the compiler complaining about DialogueFavorGeneric being an undefined variable, and considering how there is a previous fragment a couple steps back with the exact same body that compiled just fine, I have no clue what the compiler is complaining about.

Okay, so now I know that I need to define the DialogueFavorGeneric as a property for the script, but... I cant. Whenever I try, the "add property" box in the Properties menu is greyed out and unusable.