How to add Anim Event?

I read doc Animation Events,but I cannot add event,there is not any event .

where is video to learn the control ??? doc is not enough.

The docs are pretty clear about creating one. Have you created a class in c# or c++ that inherits from AnimEvent or AnimContinuousEvent? Once you have it will show up in that drop down menu

yes,I solve the problem,because my scripts is not in Source\Game\ ,so the c# script won not be complie…i am stupid…