Weak Aura help - Boss name?

[Kazistrasza]

So, I need help with a Weak Aura.

By virtue of weird comp, my resto druid is now responsible for Weakened Armor via Faerie Fire. I want a Weak Aura to help me keep track of this. According to our rogue, who knows WA but keeps forgetting to get me anything, there should be a way to have a text showing the actual name of a unit by UID.

What I have so far:

Functioning WAs that shows the FF icon with 1/2/3 that triggers when there's 5 seconds left on Weakened Armor on boss1/boss2/boss3 or the debuff isn't on them at all.

What I want:

To have the text say the name of the boss. I don't know LUA to be able to get the name of a boss ID but what text would I put in the text field to get the name of boss1/boss2/boss3?

[suprep]

if UnitExists("boss1") then
    local boss1 = UnitName("boss1")
    return(boss1)
end

I think you need to use the custom field, post your full aura.

[pnutbutter]

you put %c in it and then in the box that pops up you do

function()
return UnitName("boss1") or ""
end

[Arabus80]

im not sure but i think it should work with a multitarget aura aswell