What is wrong with my waypoint reversal?

[birdy64]

Once it gets to waypoint 163 it goes right back to waypoint 1

<waypoints>
<!-- # 1 --><waypoint x="-7281" z="2276">player:harvest();</waypoint>
--removed waypoints 2-159 to shorten post length--
<!-- #160 --><waypoint x="-1924" z="9998"></waypoint>
<!-- #161 --><waypoint x="-1840" z="9848"></waypoint>
<!-- #162 --><waypoint x="-1832" z="9789">player:harvest();</waypoint>
<!-- #163 --><waypoint x="-1901" z="9747">player:harvest();</waypoint>
__WPL:reverse();
</waypoints>

[Administrator]

<!-- #163 --><waypoint x="-1901" z="9747">player:harvest();</waypoint>
__WPL:reverse();

Why do you have player:harvest() inside the waypoint, and not __WPL:reverse()? There is your problem.