XML rtf Issue

Hi,

Any help would be much appreciated. We are facing challenges in controlling a logic in  BI publisher template. There Is a Billing Job that generates Invoices, the Process is XML publisher. Multiple Invoices will be generated in output pdf file. Each invoice will have multiple pages as well. Right now if it generates 2 invoices INVC1 and INVC2, if INVC1 have 3 pages and INVC2 have 1 page.

I need to put OMR lines (1/2 inch dark line on top left ) on BI publisher RTF template, which prints one omr line on first 2 pages of INVC1 and two omr lines on 3rd page. Same way 2 omr lines on INVC2 since it got only one page. Basically every Invoice must have one OMR line on each page and two lines on last page of that  invoice. Any code help how to control this ?