Autopilot allows you to capture hidden fields from form submissions. To do so, however, those fields need to have specific formatting.
There are two types of hidden fields:
Type 1: Hidden via HTML (not compatible)
Type 2: Hidden via CSS (compatible)
<input type=“text” style=“display: none”>
In order for Autopilot to detect the hidden fields, you must use type 2. Type 1 will not be recognized.
Also, in order to differentiate between your hidden fields, you need to make sure you name them. You can do so by adding a 'name' attribute in the field <input> tag, like so:
<input type=“text” style=“display: none” name="example">
You will know when a hidden field has been successfully detected, as the field will appear in the preview when setting up your form: