@wsangster, Answer Id: 34717 has a sample script which may point you in the right direction. It is a sample to check request receipt on a PO email. Similar to what you are looking to do.

@jarens Based on that script I'm able to set the Read Receipt field no problem with a User Event Script, but it won't set the Template. The template field is a List so I don't know if that matters. I can set it in the console after it loads. nlapiSetFieldValue('template', 4);

@wsangster. That is interesting. I suppose another way to do it is to load the template and set the message and subject fields using the script, instead of trying to set the template. Just a thought if you can't get the template to select. I'd think you should be able to though. It is in the schema browser as an option.

Ahh.. good idea.. Thanks again