Personalizzazione di base > Windchill Customization Basics > Windchill Utilities > Using the xconfmanager Utility > Setting Property Values and Propagating Your Changes > Setting a Property Value to the Null Value
  
Setting a Property Value to the Null Value
Use the following parameter on the xconfmanager command to set one or more properties to null values:
--undefine
To specify multiple properties in the parameter, separate the properties using a comma.
The following xconfmanager command sets the wt.services.service.1160 property to null (which disables the service):
xconfmanager --undefine wt.services.service.1160 -p
Assuming that the command was executed from the Windows C:\ptc\Windchill\bin directory, then the resulting output is:
Default product root=C:\ptc\Windchill\bin\..

java -jar
"C:\ptc\Windchill\bin\..\codebase\WEB-INF\lib\install.jar"
-r "C:\ptc\Windchill\bin\.." --undefine
wt.services.service.1160 -p

Propagating xconf data to target files...
The xconfmanager creates a backup of the current site.xconf file, removes any existing property settings for the specified properties that had been in the site.xconf file, adds an UndefineProperty element for each property that was specified (in this case, only wt.services.service.1160), and then propagates the change to property files that have the specified properties (in this case, only wt.properties).
Setting Property Values and Propagating Your Changes