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I'm not advanced enough to rewrite the scripts yet; my last 'programming' language was BASIC, and not even the visual kind. That said, I was...
Ah-ha! The bit I was missing was having a specifically named cargo box. That direction was not present in the original post. Got it working now!...
@Sephrajin - Thank you for sharing your scripts with the community! However, I seem to be having difficulty getting the AutoFill script working...