Extension structure BAPE_VBAP usage for valuepart2

Hello,

I have populated BAPI structure lw_bape_vbap and filling the container valuepart1 using below method.

    cl_abap_container_utilities=>fill_container_c(

                 EXPORTING  im_value               = lw_bape_vbap

                 IMPORTING  ex_container           = lw_item_ext_in-valuepart1

                 EXCEPTIONS illegal_parameter_type = 1

                   OTHERS                 = 2 ).

The length of all fields in lw_bape_vbap exceeds 240, so I need to fill remaining fields in container valuepart2.

I tried to fill the remaining like below, But I am getting Unicode error:

The offset declaration "240" exceeds the length of the character-type

start (=78) of the structure. This is not allowed in Unicode programs.

    cl_abap_container_utilities=>fill_container_c(

                 EXPORTING  im_value               = lw_bape_vbap+240

                 IMPORTING  ex_container           = lw_item_ext_in-valuepart2

                 EXCEPTIONS illegal_parameter_type = 1

                   OTHERS                 = 2 ).

Is there any other way to populate remaining fields in valuepart2.

Thanks,

Shreekant