Sublime SFTP to upload configurations file in chrooted Synology

I am running openhab2 in chrooted environment (debian) on my Synology. (set up was easy and it only took me 5 days!)
I want to manipulate config files via sublime Text with a plugin called SFTP.

Obviously it is not working to upload my config files to my Synology box. It gives me a permission error.
I checked in /etc/openhab2/. who owns the files. It turns out it is user:group openhab.

My question: How to get rid of that permission error?
Any suggestion would make me happy.

UPDATE 1: I had to change user on my debian box (chrooted at Synology) to the same user I have on my machine where I am running Sublime Text.