How to automatically add GTINs from CSV

Hi,

I’m going around in circles trying to get a solution to this. I’m using WP AllImport Rank Math SEO Add-On along with Rank Math Pro but cannot find a way to automatically add GTINs.

In my CSV file the GTINs are marked as ‘barcode’ so in WP All Import, in the Custom Fields I added Name: _rank_math_gtin_code and Value: {barcode[1]} with no luck and even tried it the other way around.

I used to use a plugin that you have mentioned many times in other posts but its no longer updated and now shows as a vulnerability.

Any help would be appreciated, thanks.