ent_animate - Push me in the right direction

For the life of me I am not able to figure out a simple thing. What are the parameters for ent_animate when I want this:

*Play the animation called "FallDown"
*Stop animation on the last frame and STAY THERE!

my.skill20 = minv(my.skill20+5*time_step,100);
ent_animate(me,"FallDown",my.skill20,0);

Thanks. Worked. Sorry, right there in the example. Gaaah.