Why smtp client example do not work?

Legacy Open AT
5

I found mistake in entry_poin.c

in
DataChannel = wip_putFileOpts ( CnxChannel, /* Session channel */

                                WIP_COPT_SMTP_FORMAT_HEADER, 1,     /* default case */
                                WIP_COPT_END );

If WIP_COPT_SMTP_FORMAT_HEADER, 1 not correctly attach file

correct vallue is 0