value is not coming alv output in webdynpro abap but the internal table has the value

Dear Experts,

I have created a ALV Webdynpro. The internal table has the output but the internal table has records. I have done all the binding and mapping correctly.

CALL METHOD obj_ref->get_data
EXPORTING
im_pmt_date = <fs_date>
im_bank_key = lv_bank_key
IMPORTING
ex_it_alv = lt_n_output.


lo_nd_n_output = wd_context->get_child_node( name = wd_this->wdctx_n_output ).
lo_nd_n_output->bind_table( new_items = lt_n_output set_initial_elements = abap_true ).