I've created a form (based on the Post form) to be used in a Public Folder. To use it, users will go to the folder, open the form from the folder list, and click the Post Reply button. They will then complete the form and click the Post button to post it to the folder.

Question: How do I get the form that the user posts to have a different subject line than the subject line of the posted form that they are replying to?

I've made the Subject field text on the Read and Compose forms different; I've also set the Reply to Folder action to use "Post" as the prefix. Neither works.