Platformer - getting damaged and jump back

I'm working on a platformer and I'm trying to figure out how to make the player jump backwards and become invincible for a few seconds when he hits a enemy/spikes. It's common in many platforming games.

Like this

What would the right term be? Knockback?

Manipulate the VectorX and VectorY expressions for knockback, and manipulate a variable for being invisible...

and during your knockback be sure to disable the platform behavior on the player

Manipulate the VectorX and VectorY expressions for knockback, and manipulate a variable for being invisible...

Eeer, what?

Oh, I get it!

there's VectorX and VectorY expressions in the platform behavior. What's the difference between VectorX,Y to Set X, Y? Is it that it's animated smoothly?

Edit : Also, here is the capx file for anybody who wants to see it.

the difference is:

Vector will trace a path;

Set will pop the object directly, without transaction, to the point;

for short invincibility for the player after he gets hit, put the events (for the hit and damage) inside a group, and on hit, disable that group for like 2 seconds or whatever you want then enable it again

for jumping back, like the guys said, set the vector x to + or - depending on which side the enemy is on. to determine which side of the player the enemy is on, you can create an event condition like:

if Player.X < Enemy.X (for player on the left)

--> set Player vector x to -300 or something

if Player.X > Enemy.Y (for player on the right)

--> set Player vector x to 300 or something

hope that helps :)