export to network shared folder

[papab]

I'd like to export my tracks as I create them to a shared network folder.   I have ASUS File Manager app installed and it can access the shared folder.   I've tried 2 ways to export to the network folder
1) Using the Data Export from the track detail.  The net folder does not show up.
2) Using Share from the track detail, the File Manager app doesn't show up.

How can I do this so I don't have to execute the extra steps of saving the file on the device, then using the File Manager to move or copy it?