Hello,
I have a workflow designed to create a button on sales order forms that sends an email alerting the sales team of the sale. This is working great and I even have it popping an error message if the sales order is saved without a sales rep listed as primary.  my template looks like:

Order #: ${transaction.custbody_master_so_number}
Customer Number: ${transaction.entity}
Year: ${transaction.custbody_year}
Make: ${transaction.custbody_make}
Package: ${transaction.custbody_package}
Power: ${transaction.custbody_electricorgas}
Custom Cowl: ${transaction.custbody_custom_cowl}
Color: ${transaction.custbody_factory_paint},${transaction.custbody_custom_paint}
BD: ${transaction.custbody_build_date}