CraftMyPDF display a list of things

I am trying to get a list of things to display from my data type through JSON into a CraftMyPDF template.

When I say “each item’s Display”, I get an error from Bubble.

I have doe a worl around with displaying first items’ and last item’s Display, but then gives an error when the items get edited by users on Bubble.

I have added some images for contxt. Any help will be appreciated.
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