Per bone collision using chaos?

For context, I’m using a geometry collection and the chaos physics to launch little shards of stone at enemies. I want the shards to hit something once, bounce off, then stop colliding with pawns so that they don’t step on the shards, which currently is causing the enemy to jerk around wildly as the shards settle.
I currently have the Event Hit node break the hit to get the Element Index before triggering the Set Per Particle Collision Profile Name, which I thought would let me change the bone to having NoCollision, but I’m doing something wrong because this doesn’t change anything. I also can’t use the FS_SleepDisable_Generic blueprint because of my method of spawning the geometry collection has it start at 0 velocity, instantly being disabled/killed. Is there any way of pulling this off in blueprint?