Number
All ACF custom fields are stored as strings - even numeric types like Number to allow for decimal points.
Liquid handles this quite nicely with one exception: you cannot do a direct comparison between a number and a string
So while this is possible:
<p>We have {{ product.metafields.accentuate.stock | plus: 100 }} in stock</p>You need to convert it to a number if you want to do a numeric comparison with the field’s value beforehand, like this:
{% assign in_stock = product.metafields.accentuate.stock | plus: 0 %}
{% if in_stock < 5 %} <p>Product is low on stock</p>{% endif %}