What exactly constitues a heal for triggering the barrier from Superior Rune of Sanctuary?

[Generalissimo.8602]

I bought a set of [superior Runes of Sanctuary](https://wiki.guildwars2.com/wiki/Superior_Rune_of_Sanctuary "Superior Runes of Sanctuary") for my thief on the incorrect assumption that barrier would proc from the healing of [invigorating Precision](https://wiki.guildwars2.com/wiki/Invigorating_Precision "Invigorating Precision") but, looking at the descriptions for the two things, I have no idea _why_ this doesn't work and what other sources of healing will and won't work with the Rune.

[Trise.2865]

"Heals" usually refers to Heal skills being used. In this particular case, it may also refer specifically to external healing.

 

That being said: Are you sure that you're critting consistently enough to proc Invigorating Precision? and dealing enough damage with it that 2% of that damage is mathematically significant? and frequently enough that the Barrier doesn't dissipate before stacking?

[Generalissimo.8602]

> @"Trise.2865" said:

> That being said: Are you sure that you're critting consistently enough to proc Invigorating Precision? and dealing enough damage with it that 2% of that damage is mathematically significant? and frequently enough that the Barrier doesn't dissipate before stacking?

 

Yep, quite sure. I've got 96% crit chance and, according to the log, am healing for a couple of hundred points on most hits.