Upload attachments to request using REST API on WDG

[Административни Справки]

Hello everyone,

We can't make it work uploading attachments on specific requests by REST API using IBM RPA Studio as a tool. The command looks like this:  

For some reason the only response I'm getting is 404. For headers I've put Atlassian-Token-X no-check and Content-Type to be multipart/form data. Also an additional info comes with the response, which is:

[Info] {"message":"null for uri: https://econtexpress.atlassian.net/rest/servicedeskapi/projects/AO/issue/AO-104530/attachment","status-code":404}
Not Found
[Content-Type=application/json; charset=UTF-8]

Any information would be of help. Thanks!