How to insert a page on the last side of a mailpiece in PIOE

Example:

[OBJECT_BOUNDARY] OBJECT BOUNDARY SCAN0
 BEGINWINDOWX 0 BEGINWINDOWY 0
 ENDWINDOWX 0 ENDWINDOWY 0
    TEST
      [TEST_BOUNDARY] //Test to determine the start and end of a document
 ACTION
 [OBJECT_INSERT_PAGE_BEFORE] AND    [OBJECT_INSERT_PAGE_AFTER]
;
 
//Page will be inserted AFTER the last side of the mailpiece (insert action - END)
[OBJECT_INSERT_PAGE_AFTER] OBJECT REGION SCAN0
 BEGINWINDOWX 0 BEGINWINDOWY 0
 ENDWINDOWX 0 ENDWINDOWY 0
 TEST
       ENDOFPARENT
 ACTION
       [INSERT_PAGE]
   ;
 
//Page will be inserted BEFORE the last side of the mailpiece (insert action- BEGIN)
[OBJECT_INSERT_PAGE_BEFORE] OBJECT REGION SCAN0
 BEGINWINDOWX 0 BEGINWINDOWY 0
       TEST
         ENDOFPARENT
 ACTION 
        [INSERT_PAGE]
    ENDWINDOWX 0 ENDWINDOWY 0
    ;

[INSERT_PAGE] INSERT SIMPLEX/DUPLEX ROTATION0;