Hi, I tried to add bolstering buff on enemy name plate but I couldn't. I added the bolstering buff on whitelist in Kui Spell list addon but it doesn't work.

Somebody can help with this?

The whitelist only affects spells you cast yourself. This: https://github.com/kesava-wow/kuinameplates-customs/blob/master/custom.mythicplus.lua shows some hostile buffs for M+ (although bolstering isn't included by default)