Docs confusing term `hyprexpo-gesture`

I want to set 4 finger pinchout to hyprexpo, the documentation linked above mentions keyword and says same as gesture. I tried the following but error pops up →
hyprexpo-gesture = 4, pinch , hyprexpo:expo

You didn’t follow the README. It says “supported gestures: expo” not hyprexpo:expo. It’s just expo.

Sorry i am still getting confused, i tried following permutations but getting error in some and no-effect on others.

plugin {
   hyprexpo {
      	hyprexpo-gesture = 3, vertical , expo
   }
}

Produces no effect


hyprexpo-gesture = 3, vertical , expo

Says that: config option does not exist.


gesture = 3, vertical , expo

Says that: Invalid gesture: expo

this is correct, make sure the plugin is loaded.