Damage Whilst on Collision

HI there,

For a small project I am working on, I’m trying to achieve how to deal damage overtime whilst the player character is standing within the trigger box.
So far, the player id dealt damage whilst they are within the trigger box, but it’s not dealing damage continuously. The string will keep printing as long as the player is within the trigger, but damage is only applied once. If I leave the trigger box, and re-enter, damage is dealt, but not continuous.
I have attached a screen shot of the blueprint that deals damage.