Ken,
I tried this as a test, created an AOI and it balked saying that the input & output tags for an AOI can not be dimensioned. And I tried to make Destination_DINT_Array a controller tag, but the AOI wouldn't see that as an available tag.
I don't have a lot of Studio5000 experience, so maybe I am missing something? I am using version 26.01.
Edit - I just looked at the latest posts and downloaded the structured text manual.