I am using this documentation Disposable customization | Qubes OS
when I write this comman
qvm-prefs fedora-26-dvm template_for_dispvms True
my output is
usage : qvm-prefs [--verbose] [--quiet] [--help-properties]
[--hide-default] [--get] [--set] [--default]
VNAME [PROPERTY] [VALUE]
qvm-prefs: error: no such property: 'template_for_dispvms'
How to solve this problem?