Where comes the data from within DB Table geodir_custom_advance_search_fields

Hi support team,

we are developing a direct DB import/export function for the advanced search option fields and looking forward to your help to find out where the data for following fields comes from.

– searching_range_mode
– first_search_value
– first_search_text
– last_search_text
– search_min_value

We tried to find out by adding different field types within back-end but cannot find where the input of the above stated fields are coming from.

Looking forward to your helping information.

Best regards, Alex