Trigger for Date Change Amendment

With all the things going on this year I have written a document to send to guests who change their dates because I want them to sign something to update the original RA. I have added it under my Legal Agreements. I have no problem when I write an email inserting that specific agreement in the email. BUT - I'd like to set up a trigger to automatically send the amendment. I can't figure out how to specify which document from the Legal Agreement page I want to send. What am I missing?

There's a way to do this but you have to make up a little bit of code on top of the {BULEASE} field. We need to make a button for it but there's not one right now.

Check out my reply over here: https://www.ownerrez.com/forums/general-help/how-to-send-2nd-legal-agreement-post-booking-with-check-in-email#64179

Thank you so much! I never searched on "2nd Legal Agreement" - my bad. I just added that to the System Message instead of having to do a follow-up email via trigger. SO COOOOOL!!!