writeBase64 returning undefined

Mahesh23 · ‎11-01-2022

Hello,
I am trying to add attachment using Base64 but the output is not expected. its showing corrupted image. what could be the issue ?
Actual Image

Output

var data = 'AwAUADC39lhI/wBWMUfZIP8AnkKsUUAV/skH/PIUfZIP+eIqLU3ARFyck54p2nhhEwYEEN3PtTAk+zRf88xTTaQ84jwfUVZoPSkAUUlFADJY0kA3qDj1pYkWNcKMClbpQvSgB1Hako7UAf/Z';
var attachment = new GlideSysAttachment();

var rec = new GlideRecord('incident');
var incidentSysID = '4a05c6bedb72d510cb58b7e8f49619a9';
rec.get(incidentSysID);
var fileName = 'example.png';
var contentType = 'image/png';
//var base64Encodedcontent = 'SSBhbSB0ZXh0Lg==';

var agr = attachment.writeBase64(rec, fileName, contentType, data);

gs.info('The attachment sys_id is: ' + agr);