Baldur's Gate : The Sword Coast Chronicles : NWN2 Persistent World

I cast Burst of Glacial Wrath o na troll that set down and regen he's life but then it rent after me Blue as cold it souldt do that i most be a bug wit those trolls

Do you mean that the trolls with their regen recover and still chase you?

Since you need fire or acid to kill the trolls, perhaps Burst of Glacial Wrath doesn't work - because when trolls hit low hp, they don't die unless you apply acid or fire damage. Maybe because Glacial Wrath also does not kill what it hits outright, there my indeed be a bug with it. If they regain over 10 HP, I imagine they start chasing again.

it could be the Burst of Glacial Wrath is to short to last Any living creature reduced to 10 hit points or lower is encased in ice for 1 round/ two caster levels (max 10 rounds). Creatures turned to ice in this fashion gain DR 10/-, vulnerability to fire, and immunity to cold and electricity.i Just found out the Burst of Glacial Wrath heal the troll