AirBNB Template & Touch Stay

I'm trying to create an AirBNB Template that pulls in the guest's Touch Stay digital guide that's specific to their booked dates (Touch Stay guide books are set to make the address and wifi info available 1 day prior to their stay). I followed this guide: https://www.ownerrez.com/support/articles/touch-stay#how-to-send-guidebook-links-to-ownerrez-as-field-codes, but it seems like it only works for Email Templates. When trying to create the AirBNB Template, I'm unable to insert a link, nor am I able to bring in my Custom Field Definition (ie., {BXTOUCHSTAYLINK}) into the AirBNB template. Is there a way to get this to work for an AirBNB template? 

Once a guest has confirmed their booking, you can share your guidebook link with them via Airbnb messaging. You will need to include the field code in your Airbnb messaging template which will pull in the guidebook link. You should be able to add the booking field code via the insert field button in your Airbnb template.