dynamic field symbol

Hello :i would like to ask one favor , how can i define a field symbol, that can recieve a dynamic variable

segment of code:

CALL METHOD cl_alv_table_create=>create_dynamic_table

EXPORTING

it_fieldcatalog = it_fldcat

IMPORTING

ep_table = it_dynamic.

ASSIGN it_dynamic->* TO <dyn_table>.

CREATE DATA wa_dynamic LIKE line of <dyn_table>.

ASSIGN wa_dynamic->* TO <dyn_wa>. " this one 'wa_dynamic' i need to sent to <dyn_wa>

thanks a lot