if statement in window

[Fallen]

few days ago i asked if someone could make a HUD for me, and razield did (thanks again =D)
so...the thing is that in my game, when my main character's HP is below half, the bar changes to "Critical" which is a completely diferent image.
i tried to do this:

@actor = $game_party.actors[0]
if @actor.hp < @actor.maxhp/2
@bitmap = RPG::Cache.picture("image2fu_danger")
else
@bitmap = RPG::Cache.picture("image2fu1")
self.contents.blt(0, 0, @bitmap, Rect.new(0, 0, @bitmap.width, @bitmap.height))

BTW...this is under refresh method

it works really good until i reach half HP, there's no error, but the HUD dissapears, and the other HUD image doesnt show up
what am i doing wrong?

 

[Sheol]

The code should be:

@actor = $game_party.actors[0]
if @actor.hp < @actor.maxhp / 2
  @bitmap = RPG::Cache.picture("image2fu_danger")
else
  @bitmap = RPG::Cache.picture("image2fu1")
end
self.contents.blt(0, 0, @bitmap, Rect.new(0, 0, @bitmap.width, @bitmap.height))

 

[Fallen]

and what's the difference? the end position?