using a for loop for dynamic registration

I am able to register events discretely, but when I attempt to do the same thing in a for loop, my code fails to work, and I don't see the difference between my two approaches.  First, the method that works:

Now, the method that doesn't work:

In addition to this shift register, I have also tried using tunneled output from the for loop, with both indexed, tunneled, and concatenating outputs.  When I say the 2nd approach doesn't work, what I mean is that the event structure never executes.  I made sure to go into the event editor and change the event to be the dynamic one that I'm registering...

Any thoughts?