actor element resistance

[bukai]

I added a window to the status window and failed to display an expression.. depending on the element_set of the actor.
this is how it looks. ->

Spoiler

class Game_Actor < Game_Battler
# element value
 def ele(element_id)
   value = element_rate(element_id)
   value+= self.class.element_ranks[element_id]
      for armor in armors.compact
      if armor.element_set.include?(element_id)
         armor.element_set.each do |element|
      value+=   element.to_i
      end
      
 end
 end
    for state in states
      if state.element_set.include?(element_id)
   value+= state.element_set.to_i
 end
end
return value
end
end

now i'm displaying it with @actor.ele(9) and ingame will pop up a number.
but i don't know how to display a string depending on the element_set.
e.g.
Element Fire => 100   
now ingame there should be Fire: Normal
when Element Fire => 150
ingame: Fire: Good
when Element Fire =< 75
ingame: Fire: Bad

i hope you get what my problem is...

thanks!