append one register to internal table in abap oo

DATA: l_fields TYPE STANDARD TABLE OFsval ,

LINEA TYPE sval.

linea-tabname = 'CSKS'.

linea-fieldname = 'KOSTL'.

linea-value = 0.

APPEND linea to l_fields.

i want to do this append, but i have an error because i work in a ABAP Objects

Some suggestions?

Thanks