Set property_path;value Optional. Overrides the configuration of a variable, property, container, log provider, foreach enumerator, ...

Set property_path;value  Optional. Overrides the configuration of a variable, property, container,  log provider, foreach enumerator, or connection within a package. When  specified, the /SET option sets the specified propertypath to the value given. Multiple /SET options can be specified.  The following is an example of executing a package that is provided a variable with a value.  dtexec /f mypackage.dtsx /set \package.variables[myvariable].Value;myvalue