Compare the upper loop with the lower loop. Take a close look at the loop exit. <img src="http://img230.imageshack.us/img230/5718/conditionalappenddesignfc4.gif" class="linked-image" border="0"> right mouse click on Tunnel: <img src="http://img80.imageshack.us/img80/5236/conditionalappenddesignbt2.gif"> greetings from martin (same on other forum : http://forums.lavag.org/Conditional-Append-t10794.html)
