Mouse Selectables

[Mr.Mo]

While I was working on my wizard i realized the mouse doesn't bring down the list(window_selectable).

I have this code here, in update;

    if mouse_over?(self) and @item_max > 0 and @index >= -1
      w = (self.width / @column_max - 32)
      xpos = $mouse.x - self.x - 16
      ypos = ($mouse.y - self.y - 16)
      i = (ypos.to_f/(32).to_f).floor
      i *= (@row_max == nil ? 1 : @row_max)
      if i + (xpos.to_f/(w).to_f) > 0 and i + (xpos.to_f/(w).to_f) < @item_max
        i += (xpos.to_f/(w).to_f).floor
        self.index = i if i >= 0 and i < @item_max
      else
        self.index = -1
      end
    else
      self.index = -1
    end

any ideas?