oUF - Layout discussion

[ninor]

I'm trying to do some buff/debuff placement switching on whether or not my target is a player or an NPC. Since NPC's usually have a lot of debuffs and few buffs, and PC's usually have the opposite.

What I've tried so far:

if unit == "target" then
     if (UnitIsPlayer("target")) then
              self.Buff.blabla
              self.Debuff.blabla
     else
              self.Buff.etc
              self.Debuff.etc
     end
end

But it's not working. Do I need to specify a "nil" response instead of just "else"? Have I misunderstood UnitIsPlayer?