I have a call center that is strictly outbound. I'm looking to pass unique call identifiers that come from my CRM when I place a call and Text. The purpose of this is so I can associate each call/text to the CRM for easy future access/reference. Doing this by "extension" doesn't work as each extension makes many unique calls throughout the day that I need to be able to map back to the record in my CRM. If there's a way for me to pass MY CRM attribute when invoking a call/text, I believe this would be an easy solution for me. However, when looking through the API docs, I didn't see where/how I could accomplish this.