so thinking by just replacing 'email' with 'custom_field_1' the call would seach the custom field 1. That happens not to be the case. I do get a reponse back with a record but it's not the record that I was looking for. Any help or suggestions would be great.
Our API search function currently only works with email and last updated date. Right now, anything further than that would require a custom script to parse and search through all the results of a GET to each contact. I understand how this function could be useful, so I'll be sure to bring this up to the development team as an idea to implement.