theres two methods that come to mind first.
first you could cast to the character base class which contains the health variable or a event to modify health and work from there.
the second method is one i never see people talk about and thats just applying negative damage. basically if you apply -25 damage with the health system shown then it is in essence a heal.
both methods work in basically the same way but the second takes advantage of the built in damage handling system so you don’t need to cast to a specific class (I included the cast to character in the second just for control of who could activate the item).
on a side note why are you using a binding for your damage when theres built in nodes (apply damage, event anydamge)?