The platform behavior only allows you to enable or disable "inverse controls" or "bunny hopping" through the properties window in the IDE.
There is not an option switch either of the two settings on or off through the event editor, at runtime.
This is important, mainly for inverse controls because when you switch the gravity direction to up, left becomes right and vice versa. Being able to add an event than turns inverse controls "on" would make it so when you reverse gravity, left still makes the player go to the left and right still goes right.
But in general, having more control over a movement is a good thing. And as it stands, you can alter all of the other platform behavior properties at runtime (through events) except "inverse controls" and "bunny hopping." I think this needs to be fixed.