cl_alv_table_create=>create_dynamic_table to use for duplicate fields

hi all,

i used cl_alv_table_create=>create_dynamic_table for creating dynamic internal table. the fieldcatalog contains a field (ATWRT) multiple times. it is showing a dump. may i know how to dynamically declare an internal table with fieldcatalog contains a field with multiple occurence?

Thanks in advance

Regards,

Kothand