One thing I have noticed with all of you guy’s graphs is that none have a delay or auth switch. You always want to add a delay after a Even begin Play & almost always need a Switch Has Authority.
Try it like this:
Other than the delay & switch, it’s only slightly different than what you have but I can confirm 100% that this works.
Since your doing a dart it should be a projectile & the easiest way I have found to change torpor is make a custom damage type for the projectile with a lot of torpor then adjust the damage amount of the projectile since it is multiplied by the torpor. IE: you have a dmgtype with say 100 torpor and your projectile does 10 damage, that’s 1000 torpor.