Sending multiple attchment in FM 'SO_NEW_DOCUMENT_ATT_SEND_API1'

Hi Experts,

I am trying to attach four csv attachment thru FM 'SO_NEW_DOCUMENT_ATT_SEND_API1' .

Mail sending part is working fine with 4 attachments.Only problem is data populated in the attachment.

it_objbin internal table contains all the data for csv file.

I know the problem exists in it_objpack code.Please help me to retrieve the exact values for each csv file.

For example,

Second file retireves the first line of third file.same for third & fourth files.

Please provide some sample code for this.

Thanks in advance