Issue in field edited by user

Hi All,

I have a z-tcode to display order-no, line item and priority (priority field can be edited by user). this transaction was associated with single order no only. I made some changes to make the program get associated with multiple order nos. 

the program is accepting multiple order nos., but the issue is - when the priority field is updated for particular line item for a particular order no, all the priorities associated with the line items is getting updated irrespective of the order no.

pls help...

Thanks & Regards,

SriLalitha.