Ugh, need some help applying damage. (pictures included)

Okay thanks that helped! However this leads to another question. I can’t seem to figure out how to get my character to equip the BP_pickaxe or figure out how to call it correctly in the Character BP. I was able to damage the MiningNode with my character by walking into it collison, but my goal is to have the pick collision sphere do it. Any help would be awesome!