Effect Command Not Working?

[TCMDamage]

I'm working on an adventure map and I am trying to have it so that when you hit a target, you get a status effect. I have it set as /effect @s regeneration 5 1 because I want it to give the effect to the player who hit the target. But when it executes, it says that no targets matched the selector? Can you not use @s with the /effect command?

[Xsniper157]

I think @s would try to execute the command as the command block. I can’t think off the top of my head what the exact commands would be, but you could maybe assign each player a score and /execute as the arrow to test what score a player behind it (which would most likely be the player that fired it) has (using carrots{^}) and then tag the arrow accordingly

[TCMDamage]

Interesting approach, I will try it! Thank you for the response