How to replace attachment automatically?

[ITSO AS]

Hi,

I need to upload a Excel File on Confluence every week.
Now i want to automate this process.
Is it possible to store the Excel File in the attachment directory of the Page and Confluence will automatically replace the old file with the new one?

Thank you for your help!

Regards

[Mirek]

It can probably done via REST API 

https://confluence.atlassian.com/confkb/using-the-confluence-rest-api-to-upload-an-attachment-to-one-or-more-pages-1014274390.html