new fields in header invoice of MIRO transaction

Hi,

i´ve added new fields to table RBKP by means of an append structure.

in transaction MIR4 i display the values of this new fields correctly.

If i use MIRO transaction i want that these new values get updated in header invoice as well.

There is a view RBKP_V that is passed as a parameter in some FM´s that update the header invoice.

How can i make that this view incorporates as well the new fields of the append structure?.

Best regards.