How to change and display a Pokemon's nickname mid battle?

[GT-Baka]

Changing the name is simple enough, the wiki even says to use the .name="" extension to change the nickname of a pokemon, however the battle screen does not want to reflect this change.

quick notes: The party screen and summary screen does show the nickname change.
I am using Pokemon Essentials v17.2
and the latest version of the Elite Battle System

Example:

# Zen Mode
    if isConst?(self.species,PBSpecies,:DARMANITAN)
      if self.hasWorkingAbility(:ZENMODE) && @hp<=((@totalhp/2).floor)
        if self.form!=1
          pokemon.name="Zen"
          self.form=1; transformed=true
        end
      else
        if self.form!=0
          self.form=0; transformed=true
        end
      end
    end

Edit: I have figured it out.
use: @name="Zen"
not:pokemon.name="Zen"