Attribute_visual_increased_regen_power
 

Who knows what is wrong with event ATTRIBUTE_VISUAL_INCREASED_REGEN_POWER?

There is no event ATTRIBUTE_VISUAL_INCREASED_REGEN_POWER or EVENT_ATTRIBUTE_VISUAL_INCREASED_REGEN_POWER

It is a constant value:
ATTRIBUTE_VISUAL_INCREASED_REGEN_POWER = 3

http://wiki.esoui.com/Globals#UnitAttributeVisual

Some more info please!
What is your usecase, what did you expect and what is not working?

Oh I see! Thank you! It is answers why I have 3 ivent from time to time!
But! This event appears not each time I use ability. Just 30% of all uses. 7-th event, for example, works 100%.

Again: This is NOT an event but a value that a function (maybe a callback function in an event) will show to you.

I'm not sure what you try to achieve. Maybe you can post your source code or give us more details what is not working.
I think you're just missunderstanding it somehow.

Maybe you mean to use the event EVENT_UNIT_ATTRIBUTE_VISUAL_ADDED