open_shingle = 0;

switch(open_shingle)
{
case 1:
  toggle(1);
  break;
case 2:
  toggle(2);
  break;
case 3:
  toggle(3);
  break;
case 4:
  toggle(4);
  break;
case 5:
  toggle(5);
  break
case 6:
  toggle(6);
  break;
case 7:
  toggle(7);
  break;
case 8:
  toggle(8);
  break;
case 9:
  toggle(9);
  break;
case 10:
  toggle(10);
  break;
case 11:
  toggle(11);
  break; 
}