[Solved] Frost Arrows trigger problem

[Rybak]

Helloes Hive Workshop

I seems to have a slight problem with an ability based on Frost Arrows. I made a trigger beginning with "A unit finishes casting a spell", then I state the conditions ("with Or") that the spell is one of six spells based on Frost Arrows. And then it is supposed to run the triggers. Yet, it doesn't. Am I to suppose that Frost Arrows (or basically any spell of this kind) isn't considered "a spell"? I tried changing it to "A unit begins targetting a skill" (or however it is in english, I have polish version of wc3), but to no avail.
Any suggestions?

 

[Xonok]

I think those abilities are never cast. You could use a damage detection system and look for the according buff.

 

[Rybak]

Thanks, it worked