Applying Damage once check?

Hello, I’m sure this isn’t a very difficult check but I’m having a little struggle of how to check it. The player’s attack hits the enemy actor which triggers them to take damage and play a certain montage. The attack is set up in a anim tick state where a multispheretrace is used and then apply damage. The tick allows me to hit multiple enemies with one attack but it keeps ticking the damage value. What would be a good way to check if the enemy has been damaged and only damage once per attack? Where would it be good to place it? Here are screenshots of the animstate and enemybp.