screen exit in ME51n

hi all,

my requirement is like this:-

while creating a purchase requisition user want to see the data of last 2 purchase order of the material (last 2 purchase order price and their date).

I have implemented enhancement MEREQ001, and written code in function module EXIT_SAPLMEREQ_001.

There I have been able to display the data of last 2 purchase orders, but I am not being able to save these data in EBAN, where I have created fields in .include structure CI_EBANDB.

My problem is I am not being able to save the data of last 2 purchase orders in these fields of EBAN.

I have searched for solutions in SDN but could'nt find a proper solution.

It will be very helpfull if you people give me a solution to save the data in EBAN.

Thanks in advance.