To begin  we add bates numbering tool to the Pre-Classification Processing node and configure it.

Then add an Assign Token Value tool to the First Page Identification node in the Document Class.

Then Create a FirstBatesNumber token and assign the value of %(PAGE Bates Numbering_Latest), this will store the FIRST bates number of the Document.

Add a Permanent Stamp tool to the Page Processing node and configure it to apply the bates number to the page.  Assign the stamp text value %(Page Bates Numbering_Latest) which will stamp a new number for each page.

Next, add a Token Accumulator tool to the Page Processing Node. Configure it to collect the tokens for all pages and set the value to collect for each page to %(PAGE Bates Numbering_Latest).  this will store ALL the bates numbers for the entire document in the accumulator.

Next, apply the tokens to the  field in the Document Class settings as shown. (I am not using a template, only a field to store the range of bates numbers.) You must use the Token Dialog to get advanced options for the token.

(Token Dialog View)  I have applied the token for the first bates number and added the token for the Token Accumulator.

Next, select the Token Accumulator and then check "Apply Index", leave the value at 1 but...  (VERY IMPORTANT)....  change the "from the " value to "END".   This will deliver the LAST bates number from the Accumulator.

That's it.

Save the session and begin testing.