Display Variant Metafield on Product Page

Hi, im trying to display variant metafield dynamically on the product page every time a variant is selected I tried pasting the following code (on the Dawn theme) in the Main-product.liquid file but it don’t work:

{% assign current = product.selected_or_first_available_variant %}
{% assign variant_metafields = ‘’ | split: ‘’ %}
{% for variant in product.variants %}
{% assign variant_metafield = variant.metafields.custom.amazon %}
{% assign variant_metafield_object = ‘{“id”: "’ | append: variant.id | append: ‘", “amazon”: "’ | append: variant_metafield | append: ‘"}’ %}
{% assign variant_metafields = variant_metafields | push: variant_metafield_object %}
{% endfor %}

Thank you!