Help Me : Enhancement for PO creation: Its urgent

Hi ,

I have the following requirement.

In the PO creation , if the user enters a particular material in line item 10 , then fill the item screen with constituents of that material as seperate line item .

I tried to do this by using user exit EXIT_SAPMM06E_017.

But the problem is that I can only change the item with line item 10.I can't insert new line items.

There is Badi ME_PROCESS_PO_CUST which can be used to do this.But I don't have the knowledge of BADIs.

Can anybody help me in inserting new items??

Message was edited by: Asit Garg