I find the problem
correct code below
var sch = Things["LightSwitchOn"];
var params = {
tableName: "Settings" /* STRING */
};
var ext = sch.GetConfigurationTable(params);
var x = ext.getRow(0);
x.SetStringValue("schedule", "0 " + cronDate.getMinutes() + " " + cronDate.getHours() + " * * ? *");
x.SetBooleanValue("enabled", true);
x.SetStringValue("runAsUser", "Administrator");
var paramsSet = {
configurationTable: ext /* INFOTABLE */,
persistent: true /* BOOLEAN */,
tableName: "Settings" /* STRING */
};
// no return
sch.SetConfigurationTable(paramsSet);
sch.EnableThing();
logger.info("Controllo configurazione restart LightSwitchOn");
sch.RestartThing();
Thanks Ankit for java solution