First time post, so be gentle! I've got a custom form on my website, and i'm simply trying to map my input field (Postcode), to the existing hubspot property (Postal Code). The knowledge base is a bit vague, I just need to know what I need to add to my form code to enable the mapping to work.
My field code looks like this - <input type="text" id="txtpostcode" name="txtpostcode" placeholder="Postcode" required>