How to read data

Hi friends,

I have a requirement, where in i am creating a screen exit for ME51N.I am using MEREQ001 enhancement for this.It is working fine, but i am to get data in to this so as to write any code.For that i am using the function exit EXIT_SAPLMEREQ_001 in that same enhancement(thought of doing export and import).

But the data is declared in this way..

REFERENCE(IM_REQ_ITEM) TYPE REF TO IF_PURCHASE_REQUISITION_ITEM

so now it is having a method GET_DATA in which i have all the parameters required.

can anyone please tell me how to read this data...

Regards,

Thoufique.