GlideSysAttachment not working for xlsx

[SD35]

When I run this code, and when the generated excel file that is downloaded and opened gives the following error:

The code works for content type xls and csv's.

var attachment = new GlideSysAttachment();

var rec = new GlideRecord('incident');

rec.get('540c24151b5f0550a6500f2bdc4bcbaa');

var fileName = 'example.xlsx';

var contentType = 'application/xlsx';

var content = 'The text that is stored inside my file';

var agr = attachment.write(rec, fileName, contentType, content);

[Kieran Anson]

Hi,

for the content variable, is the text you've used just placeholder or what you're actually trying to push? If so, that would be the issue as an xlsx file expects a certain type of encoding. CSV on the other hand is just a comma separate text file

[SD35]

Yes its a simple placeholder. 

But ultimately i will try to do a key value pair something like this:

But this is the second step

But Trying to use the documentation and just change the content type example: https://developer.servicenow.com/dev.do#!/reference/api/rome/server/no-namespace/c_GlideSysAttachmentScopedAPI which is the first step

[Ed13]

Try replace the content type piece  with the following: 

var rec = new GlideRecord('incident');
rec.get('540c24151b5f0550a6500f2bdc4bcbaa');
var fileName = 'example.xlsx';
var contentType = '*/*';
var content = 'The text that is stored inside my file';

[SD35]

No this does not work.