Yanfly Buff & States Core - force action upon state expiring

[+ AdamSakuru 43]

http://yanfly.moe/2015/12/25/yep-50-buffs-states-core/
Go to 6:22 in the video so you'll know what I'm asking about.

Does anyone know the syntax that would force the actor who has a state (that lasts a few turns) to perform a skill/action when said state expires? (This would be like a curse state, that kills the actor when it expires)

And, similarly, syntax that would have a chance (let's say 50%) of forcing the actor with said state to perform a skill/action upon their turn starting, before their chosen action/skill? (this would be used like confusion in Pokemon. 50% actor will get a state that prevents them from acting that turn)