i want to disable ticket in spice protocol so i should use vdsm hook for edit xml. this is my script and i want to run in all vm, i mean i don't need custom probreties , no error found in vdsm log and vm is work but nothing happened for disable ticket i try another attribute as example 'type' i put vnc instend of spice and nothing happened stay spice .... what i must do ??? this my script: #!/usr/bin/python import os import sys import hooking import traceback try: domxml = hooking.read_domxml() graphics = domxml.getElementsByTagName('graphics')[0] graphics.setAttribute('disable-ticketing','true') hooking.write_domxml(domxml) except: sys.stderr.write('ticket: [unexpected error]: %s\n' % traceback.format_exc()) sys.exit(2) i search in libvirt xml about disable-ticketing schema but i don't found http://libvirt.org/formatdomain.html i need disable ticket because i want use thin client hardware which connect by spice protocol but i donn't want every connection create ticket by computer machine..