def new_column( self, text):
c = BoxLayout( orientation='horizontal', padding=(0,'5dp'), size_hint_y=None, height=row_height, size_hint_x=1)
c.chk = CheckBox( active=False, size_hint_x=None, width='40dp')
c.add_widget( c.chk)
c.lbl = LeftLabel( text=text, valign='middle', font_size=font_size)
c.add_widget( c.lbl)
self.scroll_box.add_widget(c)
return c
