Hotbar : Add amount of proc left

[battosa]

don't know if it's possible but i would like to see the amount of proc left when i cast a spell like Hostage of the Coercer

I've seen this on some Maintened effect windows but i don't know how to add it in a Hotbar windows

DynamicData="/GameData.Maintained.Spell_30.AmountRemaining"

Is it even possible?
thanks