Since stuff is down i'm doing from memory but I was utilizing the "Cast on...." button so i believe parameters are:
Who casts ability: All
Ability to be cast on: Tank (alias tab was verified.. also i tried just putting in the name of the tank i wanted it cast on as well to no avail)
Ability to be cast: Mercy or Anger
Those may be in a different order, but i definitely checked and rechecked my syntax for accuracy.. and tried different aliases to see if that was what was holding it up (i have several other abilities that i have made successfully.. which of course doesn't mean i didn't screw something up.. but it at least establishes i have the capability of doing it properly hehe)
I did run a spell export.. i had added it to his named combat routine as workaround for now -- (incidentally this is one of the first things i troubleshoot now because i've toiled for hours in the past trying to get things to work only to realize i didn't have an up to date spell export file lawl..)
Image of ability to follow once i figure out how to make it post right
