Player knockback

So what do you want me to do then? I won’t use hit normal so what should I connect multiply vector to? Remember, the enemy is only touching me, not shooting a projectile or smacking me across the head with a baseball bat. Remember, my blueprint looks like this, I connected that multiply vector to hit normal but I’ll remove that obviously, so what should I connect that multiply vector to?

https://i.imgur.com/VRjBar0.png