Unable to add an attachment using background script

[ghouse]

Hi service now proffessionals,

                         Iam trying to add an attachment to an closed incident via background scripts but iam unable to add , below is the script im using to add . can you please suggest if this script is right or any modifications need to be made. 

var gr = new GlideRecord('sys_attachment');

gr.addEncodedQuery('GOTOtable_sys_idLIKE46afe2b41b92891036340ed6624bcb11');

gr.query();

if(gr.next()){

gr.table_name = 'incident';

gr.table_sys_id = '7b13faae1b8e4950a9ea21b3b24bcba2';

gr.update();

}

I also tried with an alternative script change but that didnt work 

var gr = new GlideRecord('sys_attachment');
gr.addQuery('table_name','sc_req_item');
gr.orderBy('table_sys_id');
gr.query();
var inc = "7b13faae1b8e4950a9ea21b3b24bcba2";
while(gr.next()){
inc = gr.table_sys_id;
//gr.table_name = 'sc_req_item';
gr.table_sys_id = '7b13faae1b8e4950a9ea21b3b24bcba2';
//inc = gr.table_sys_id;
//grCI.setWorkflow(false); //Do not run business rules
//grCI.autoSysFields(false); //Do not update system fields
gs.addInfomessage('it will work now');
gr.update;
}

Can you please help me in providing best solution in order to fix it. Thank you.

Regards,

Ghouse sharief

[sachin_namjoshi]

You need to use GlideSysAttachment.copy() API to copy attachments.

https://developer.servicenow.com/dev.do#!/reference/api/rome/server/no-namespace/c_GlideSysAttachmentScopedAPI

Regards,

Sachin

[ghouse]

hi sachin,

                Thanks for the reply , i modified the script as per my need and updated the script . the script is running and the info is generated .However , the attachment is not added to the incident record . could you please review the error i have made or suggest how good can i modify the script.

var attachment = new GlideSysAttachment();
var incidentSysID = '46afe2b41b92891036340ed6624bcb11';
//var table_sys_id= '7b13faae1b8e4950a9ea21b3b24bcba2';
var incGR = new GlideRecord('incident');
incGR.get(incidentSysID);

var copiedAttachments = attachment.copy('sc_req_item', incidentSysID, 'incident', incGR.getValue('7b13faae1b8e4950a9ea21b3b24bcba2'));
gs.info('Copied attachments: ' + copiedAttachments);

The output iam getting is as shown in the screenshot :