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Do Until Loop Issue

With some downtime at work, I decided to teach myself DO UNTIL looping within PC-DMIS 2023.2. I have already played with the normal LOOP function BTW (and it works just fine).

I am trying to loop with a +Y offset of 4" for a 1X3 grid of parts, but the program keeps going back to the original part the program started at instead of advancing to the next part 4" up.

It's probably simple, but I must be missing it. What is it? Code below: