I tried this as well for v4.1.9, but it doesn't show the designated extra field. I've added {$product.extra_fields.0.value} to the mail/html/order_invoice.tpl. How did you get the extra field to work?
Christine
Quote:
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Originally Posted by balinor
Figured it out, use this value to call extra fields on the invoice:
{$product.extra_fields.0.value}
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