GetUnitBuffInfo question castByPlayer
 

Hi, im trying to determine if i a debuff i put on a target was cast by me
the ESOUI API website has this:
local buffName, timeStarted, timeEnding, buffSlot, stackCount, textureName, iconFilename, buffType, effectType, abilityType, statusEffectType, abilityId, canClickOff, castByPlayer = GetUnitBuffInfo(unitTag, i)

however, im finding castByPlayer always returns NIL. Has the return values changed in one of the patches or something, or is this information not available?

(problem is, if someone else puts the same DOT on the target that I am, i can't tell who's it is)

can anyone help?