Thunar and Custom Actions

If I mount a phone using Xfce-Terminal as user: obexfs -b xx:xx:xx:xx:xx:xx /my/mount/point Open thunar, on the left DEVICES File System MYPhone Second button click on MyPhone > Disconnect Failed to eject "MyPhone" umount: /my/mount/point: Permission denied In Xfce-Terminal fusermount -u /my/mount/point It's disconnected/unmounted. How can the custom action be changed from umount to fusermount. can not find relevant entry in thunarrc, uca.xml ___ Regards Frank Murphy