I have no formatting options in my TextView so Method get_plain_text of Class cl_wd_formatted_text did the trick (in combination with a SPLIT AT cl_abap_char_utilities=>newline...)
Like this
IF ls_text-answtext IS NOT INITIAL.
lr_formatted_text = cl_wd_formatted_text=>create( xml_text = ls_text-answtext ).
ls_text-answtext = lr_formatted_text->get_plain_text( ).
SPLIT ls_text-answtext AT cl_abap_char_utilities=>newline INTO TABLE lt_text_tab.
ENDIF.
LOOP AT lt_text_tab INTO ls_text_tab.
ls_tlin-tdformat = '*'.
ls_tlin-tdline = ls_text_tab.
INSERT ls_tlin INTO TABLE lt_tlin.
ENDLOOP.