Using transaction node to update PR13.1

Hi all, I'm trying to update PR13.1 with a transaction node but am running into issues.  I need to update the RES-CODE field for certain deduction codes, however the transaction is expecting the exact line number (r0,r1,r2,etc)... I dont have those... All I have is data from a query that gives the employee, deduction, and company and I know that everybody in the list for that deduction needs the res code flipped to N.  Does anybody have a work around here?  I have been unsuccessful finding another screen to update this on.  I though about possibly do an inquire first, then parsing the XML to figure out if r0, r1, etc.. but that seems like a pain plus if there are more than 4 of them you get the "More records exist - PageDown" message, and I am not sure how to inquire and get to those other records.  Any help would be greatly appreciated