Forcing a player off an object?

Game Modding | Call of Duty: Black Ops 3 | Radiant

MKD Joker:

Im not sure how in radiant (I assume its in radiant) to force a player off an object. My example is that I have a chair that is possible to get on and zombies pileup and cant hurt you, I want to have the mechanic that throws the player off the chair so its not possible to cheat on my map

Spiki:

Clip much?

If you insist on not clipping, make a slope and give it the texture "slick"

eDeK:

MKD Joker:

thank you guys!