Sample code for preprocessing BADI

Dear all,

I've checke http://scn.sap.com/docs/DOC-45449 that shows an example

"A simple Custom Badi to Take a RECORD AND Copy it to Another Key". in method IF_UJ_CUSTOM_LOGIC~EXECUTE.

Now I'd like to do the same in METHOD if_ujr_wb_pre_process~pre_process. but there i don't have CT_DATA but CT_ARRAY.

Could you please help and share some sample code?

Thanks in advance