Get_Element initial in popup

Hi All,

On clicking a link in WDA page, it opens a pop-up using create_window.

When I close the pop-up and then click the link again to open the pop-up,

I am getting IS NOT BOUND:

lo_nd_n_lt_observ = wd_context->get_child_node( name = wd_this->wdctx_n_lt_observ ).

    lo_nd_n_lt_observ->bind_table( lt_ltobserv )

LOOP AT lt_ltobserv INTO ls_ltobserv.

lo_el_flight = lo_nd_n_lt_observ->get_element( index = sy-tabix ).

     IF lo_el_flight  IS BOUND.

lo_el_flight is initial. Sy-tabix has a value.

Please help in this regard.

Thanks,

Venkat