custom fields in search module

custom fields in search module

Hi there

I am trying the DJ-Classifieds test drive site, and was trying to add custom fields to the search function, as per the instructions here:

https://support.dj-extensions.com/portal/en/kb/articles/custom-fields-in-search-filter-module#Adding_a_new_custom_field

I am having no luck, and wondered if there is a bug, or if this feature has been disabled for the demo site?

Thanks in advance!