Prevent custom dialog box from reappearing

My project is creating a dynamic stamp with a custom dialog box that stamps a group of files with an auto-incrementing exhibit stamp. I have an issue that I could use some guidance on. The dialog box asks for Exhibit Type, Prefix, Starting Value, Case#, and Page Location. I want this dialog to appear once before the first document, and then to batch process the other documents using the stored values. 

I know the variables need to be stored in a global variable, but I don't know how to prevent the dialog box from popping up each time. I've searched community post and read "All About PDF Stamps" with  no luck on finding what I need. Does anyone know how to script this or if there a resource I can look at?