How to change toolbar in ALV in runtime

Hi, Experts

I can exclude some toolbar by passing the internal table lt_exclude when first calling the method as below:

call method g_grid->set_table_for_first_display

EXPORTING

it_toolbar_excluding = lt_exclude

CHANGING

it_fieldcatalog = pt_fieldcat

it_outtab = pt_outtab.

Now, my problem is after that, if I change lt_exclude table so as to change excluding toolbar in runtime, how can I do?

Thanks a lot.

Tom