DBPRINT - REPORT TO PRINTER

I have an exercise program that writes an invoice.  One of the output options
writes a hard copy to a printer.  However, I cannot seem to get this to work. 
Everything ends up being sent to a file.

The report direction window uses this code:

  CASE (print_option)
    WHEN "F"
      LET file_name = "inv", gr_orders.order_num USING "<<<<&",".out"
      START REPORT invoice_rpt TO file_name
      MESSAGE "Writing invoice to: ", file_name CLIPPED," -- please wait."
    WHEN "P"
      START REPORT invoice_rpt TO PRINTER
      MESSAGE "Writing invoice to: Printer -- please wait."
    WHEN "S"
      START REPORT invoice_rpt
      MESSAGE "Preparing invoice for display -- please wait."
  END CASE


I have DBPRINT set:

export DBPRINT=NP4172.HAMILTON.HARTE-LYNE.CA

echo $DBPRINT
NP4172.HAMILTON.HARTE-LYNE.CA

lpstat -p NP4172.HAMILTON.HARTE-LYNE.CA
printer NP4172.HAMILTON.HARTE-LYNE.CA is idle.  enabled since Mon Jun 14
14:15:06 2021


What else am I supposed to set or specify, and where?

Thanks.

-- 
***          e-Mail is NOT a SECURE channel          ***
        Do NOT transmit sensitive data via e-Mail
   Unencrypted messages have no legal claim to privacy
 Do NOT open attachments nor follow links sent by e-Mail

James B. Byrne                mailto:[email protected]
Harte & Lyne Limited          http://www.harte-lyne.ca
9 Brockley Drive              vox: +1 905 561 1241
Hamilton, Ontario             fax: +1 905 561 0757
Canada  L8E 3C3